Compaq Presario CQ42-400 Compaq Presario CQ42 Notebook PC and HP G42 Notebook
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- Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 1
Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC Maintenance and Service Guide SUMMARY This guide is a troubleshooting reference used for maintaining and servicing the computer. It provides comprehensive information on identifying computer features, components, and spare parts; - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 2
States and other countries. Microsoft and Windows are U.S. registered trademarks of Microsoft Corporation. SD Logo is a trademark of its proprietor. The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 3
guide to include HP G42 Notebook PC and Compaq CQ42 Notebook PC information only. ● Added newly supported newly supported processors to Added newly supported system boards Added newly supported hard drives to newly supported processors newly supported system boards newly supported wireless devices - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 4
iv MSG revision history ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 5
Safety warning notice WARNING! To reduce the possibility of heat-related injuries or of overheating the computer, do not place the computer directly on your lap or obstruct the computer air vents. Use the computer only on a hard, flat surface. Do not allow another hard surface, such as an adjoining - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 6
vi Safety warning notice ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 7
components ...17 Left-side components ...18 Bottom components ...19 Wireless antennas ...20 Additional hardware components ...21 3 Illustrated parts catalog 4 Removal and replacement procedures ...45 Preliminary replacement requirements 45 Tools required ...45 Service considerations ...45 Plastic - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 8
replacement procedures 50 Serial number ...50 Computer feet ...51 Battery ...52 Hard drive ...53 Optical drive ...56 WLAN module ...58 Memory module ...61 Keyboard ...63 Top cover ...65 Speaker assembly ...68 Power button board ...69 TouchPad button board ...70 Modem module ...71 Bluetooth - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 9
Blu-ray ROM with LightScribe DVD±R/RW SuperMulti DL Drive specifications 113 System resource specifications ...114 7 Backup and recovery ...115 Windows 7 ...115 Creating recovery discs 116 Backing up your information 117 Using Windows Backup and Restore 118 Using system restore points 119 When - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 10
Requirements for specific countries or regions 130 10 Recycling ...131 Battery ...131 Display ...131 Index ...137 x ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 11
Category Description HP G42 Product Name Processors Compaq Presario CQ42 Notebook PC HP G42 Notebook PC Intel® 3MB 35W Intel Pentium™ Discrete √ HP G42 UMA √ Compaq Presario CQ42 Discrete √ Compaq Presario CQ42 Compaq Presario CQ42 UMA Models UMA Models 150-199 100-149 √ √ - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 12
1024 MB of system memory ● Up to 358 MB on computers with more than 2048 MB of system memory HP G42 UMA Compaq Presario CQ42 Discrete Compaq Presario CQ42 Compaq Presario CQ42 UMA Models UMA Models 150-199 100-149 √ √ √ √ √ √ √ √ √ √ √ √ √ 2 Chapter 1 Product description ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 13
(integrated)/GMA 4500M - GL40 chipset with shared video memory (memory size is dynamic change): ● Up to 1759 MB for computers with than 1024 MB of system memory HP G42 UMA Compaq Presario CQ42 Discrete Compaq Presario CQ42 Compaq Presario CQ42 UMA Models UMA Models 150-199 100-149 √ ENWW 3 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 14
x 4 PCs) Support for BD or √ HD-DVD playback with HD decoder and DX10 support Panel 35.6-cm (14.0-in) √ HD LED BrightView (1366 x 768) 16:9 wide aspect √ ratio Memory 2 SODIMM slots √ HP G42 UMA Compaq Presario CQ42 Discrete √ Compaq Presario CQ42 Compaq Presario CQ42 UMA Models - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 15
(1024 MB × 1) Supports 9.5-mm, 6.35-cm (2.5-in) hard drive Serial ATA Supports the following drives: ● 750 GB, 5400 rpm ● 640 GB, 5400 rpm ● 500 GB, 7200 rpm Discrete √ √ √ HP G42 UMA √ Compaq Presario CQ42 Discrete √ Compaq Presario CQ42 Compaq Presario CQ42 UMA Models UMA Models 150-199 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 16
Camera VGA camera Fixed (no tilt) 640 × 480 by 24 frames per second Microphone One microphone, analog Audio HD audio Supports Microsoft Premium requirements Discrete √ √ √ HP G42 UMA Compaq Presario CQ42 Discrete √ Compaq Presario CQ42 Compaq Presario CQ42 UMA Models UMA Models - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 17
802.11b/g WiFi Adapter Broadcom 4312G 802.11b/g WiFi Adapter plus Broadcom 2070 Bluetooth 2.1+EDR Adapter Realtek RTL8191SE 802.11b/g/n 1x1 WiFi Adapter Discrete √ √ √ √ HP G42 UMA √ √ Compaq Presario CQ42 Discrete √ Compaq Presario CQ42 Compaq Presario CQ42 UMA Models UMA Models 150-199 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 18
√ modem option RJ-45 (Ethernet, √ with link and activity lights) Audio-in (mono √ microphone) Audio-out (stereo √ headphone) 8 Chapter 1 Product description HP G42 UMA √ Compaq Presario CQ42 Discrete √ Compaq Presario CQ42 Compaq Presario CQ42 UMA Models UMA Models 150-199 100-149 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 19
) Free DOS Serviceability End-user replaceable parts: AC adapter Battery (system) Hard drive Memory module Optical drive Mini-card device Discrete √ √ √ √ √ √ HP G42 UMA √ √ Compaq Presario CQ42 Discrete √ Compaq Presario CQ42 Compaq Presario CQ42 UMA Models UMA Models 150-199 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 20
10 Chapter 1 Product description ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 21
in this chapter identify the standard features on most computer models. To see a list of hardware installed in the computer, follow these steps: 1. Select Start > My Computer. 2. In the left pane of the System Tasks window, select View system information. 3. Select Hardware tab > Device Manager. You - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 22
is active, the light is off. Moves the pointer and selects or activates items on the screen. Functions like the left button on an external mouse. Functions like the right button on an external to" Using the TouchPad" section later in this guide. 12 Chapter 2 External component identification ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 23
computer is on. ● Blinking: The computer is in the Sleep state. ● Off: The computer is off or in Hibernation. ● White: An integrated wireless device, such as a wireless local area network (WLAN) device and/or a Bluetooth® device, is on. ● Amber: All wireless devices are off. ENWW Top components 13 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 24
to exit Sleep. ● When the computer is in Hibernation, briefly press the button to exit Hibernation. If the computer has stopped responding and Windows® shutdown procedures are ineffective, press and hold the power button for at least 5 seconds to turn off the computer. To learn more about your - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 25
information when pressed in combination with the fn key. Displays system information when pressed in combination with the esc key. Displays the Windows Start menu. Displays a shortcut menu for items beneath the pointer. Navigate using the Up, Down, Left and Right arrow keys. Execute frequently - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 26
Display Component (1) Internal microphone (2) Integrated webcam (select models only) (3) Integrated webcam light (select models only) Description Records sound. Records audio and video and captures still photographs. On: The integrated webcam is in use. 16 Chapter 2 External component - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 27
Right-side components Component (1) Optical drive (2) Optical drive light (3) USB port (4) RJ-11 (modem) jack (select models only) (5) AC adapter/power/battery light (6) Power connector Description Reads and writes to optical discs. Blinking: The optical drive is being accessed. - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 28
jack (8) Digital Media Slot (select models only) (9) Drive light Description Connects an external VGA monitor or projector. Enables airflow to cool stereo speakers, headphones, earbuds, a headset, or television audio. Supports the following optional digital card formats: ● Memory Stick (MS) - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 29
(5) Hard drive bay Description Holds the battery. Releases the battery from the battery bay. Enable airflow to cool internal components on select models, the wireless LAN (WLAN) device. CAUTION: To prevent an unresponsive system, replace the wireless module only with a wireless module authorized - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 30
from the outside of the computer. NOTE: For optimal transmission, keep the areas immediately around the antennas free from obstructions. To see wireless regulatory notices, refer to the section of the Regulatory, Safety and Environmental Notices that applies to your country or region. These notices - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 31
Component (1) Power cord* (2) AC adapter (3) Battery* *Power cords vary in appearance by country or you purchased the computer, you must obtain a country- or region-specific modem cable adapter (included with select models or purchased separately). The modem must be connected to an analog - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 32
22 Chapter 2 External component identification ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 33
3 Illustrated parts catalog Serial number location When ordering parts or requesting information, provide the computer serial number and model number located in the battery bay of the computer. ENWW Serial number location 23 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 34
display assembly NOTE: See Display assembly components on page 31 for more display assembly internal component spare part information. ● For use with integrated microphone and webcam; Presario, matte black Spare part number 592146-001 24 Chapter 3 Illustrated parts catalog ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 35
622572-001 and 1.3 only) ● For use with integrated microphone and webcam; Presario, velvet red (for model 1.2 only) 624966-001 ● For use with integrated microphone and webcam; HP, velvet red (for models 1.2 and 1.3 only) 630907-001 Keyboards ● For use in Brazil 600175-201 ● For use in Canada - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 36
UMA ROM 2M system board (for model 1.3 only) 639267-001 Plastics Kit (see Plastics Kit on page 33 for more Plastics Kit information) 600190-001 (9a) Hard drive compartment cover (9b) Wireless/memory module mini-card compartment cover RTC battery (includes mounting adhesive) 602745-001 26 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 37
MHz 598856-001 ● 4-GB, PC3-10600, 1333-MHz (for models 1.2 and 1.3 only) 599092-001 Modem module ● High-speed , Honduras, Hong Kong, Hungary, Iceland, India, Indonesia, Ireland, Italy, Ivory Coast, Intel Centrino Wireless-N 1000 802.11b/g/n 1x2 593530-001 Broadcom 4312G 802.11b/g WiFi Adapter - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 38
Honduras, Hong Kong, Hungary, Iceland, India, Ireland, Italy, The Ivory Coast, WiFi and 2070 Bluetooth 2.1+EDR Combo adapter 600370-001 (BT3.0+HS ready) (for models 1.2 and 1.3 only) Ralink 5390GN 802.11b/g/n 1x1 WiFi Adapter (for model 1.3 only) 630703-001 Processor (includes replacement - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 39
use with HDMI card reader, velvet red (for models 1.2 and 1.3 only) 624970-001 Bluetooth module (for models 1.0, 1.1 and 1.3 only) 537921-001 Bluetooth module cable (for models 1.0, 1.1 and 1.3 only) (illustrated with Bluetooth 602822-001 module) Battery ● 6-cell 47-WH (2.2-Ah) LI-ion 593553 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 40
) 603785-001 ● 500-GB 7200 RPM 608218-001 ● 320-GB 7200 RPM 600169-001 ● 250-GB 7200 RPM 575598-001 ● 160-GB 7200 RPM (for models 1.0, 1.1 and 1.2 only) 600167-001 Hard drive cable/adapter (included with the cable kit; see Mass storage devices on page 34) 610791-001 Optical drive cable - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 41
Display assembly components Item (1) (2) (3) Description Spare part number Display bezel ● HP, for use with microphone and webcam ● Presario, for use with microphone and webcam 592147-001 592148-001 35.6 cm (14-in) high definition, Brightview, display panel (includes display panel cable) - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 42
● HP, biscotti ● HP, silver (for models 1.1, 1.2 and 1.3 only) ● HP, white (for model 1.1 only) ● HP, charcoal (for models 1.2 and 1.3 only) ● HP, imperial blue (for models 1.2 and 1.3 only) ● Presario, velvet red (for model 1.2 only) ● HP, velvet red (for models 1.2 and 1.3 only) Webcam module - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 43
Plastics Kit Item Description Plastics kit (1) Hard drive bay cover (includes captive screws) (2) Wireless/memory module mini-card compartment cover (includes captive screw) Spare part number 600190-001 ENWW Plastics Kit 33 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 44
1.1, 1.2 and 1.3 only) ● 500-GB 7200 RPM ● 320-GB 7200 RPM ● 250-GB 7200 RPM ● 160-GB 7200 RPM (for models 1.0, 1.1 and 1.2 only) 634250-001 603785-001 608218-001 600169-001 575598-001 600167-001 Hard drive hardware kit (contains screws, hard drive bracket, not illustrated) - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 45
and 1.3 only) ● DVD±RW SuperMulti DL Drive with LightScribe, imperial blue (for models 1.2 and 1.3 only) ● DVD±RW SuperMulti DL Drive with LightScribe, velvet red (for models 1.2 and 1.3 only) Spare part number 600172-001 608119-001 608120-001 622575-001 622576-001 624969-001 ENWW Mass storage - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 46
cord, AC, 3 wire, black, 1.83-m ● For use in Argentina ● For use in Australia ● For use in Europe (for model 1.3 only) ● For use in Brazil ● For use in India ● For use in Italy ● For use in North America ● For use in South Korea ● For use in Taiwan ● For use in Thailand ● For use - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 47
(for models 1.0 and 1.1 only) Hard drive hardware kit Processor, Intel Celeron processor 900 - 2.2-GHz Bluetooth module without cable (for models 1.0, Mobile,T4300, 2.1-GHz (for models 1.0 and 1.1 only) Hard disk drive, 250-GB 7200 RPM Atheros AR9285 802.11 a/b/g/n 2x2 WiFi adapter for use in Canada - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 48
11 a/b/g/n 2x2 WiFi adapter for use Hungary, Iceland, India, Ireland, Italy, models 1.0, 1.1 and 1.3 only) Display panel, 35.6 cm (14-in) high definition, Brightview 35.6 cm (14-in) WXGA Brightview display assembly for use with integrated microphone and webcam; Presario, matte black Display bezel, HP - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 49
webcam Display back cover, Presario, matte black Display hinge cover Display cable kit Display screw kit (not illustrated) Processor, Intel Core 2 Duo Mobile processor T3300 - 2.0-GHz (for models 1.1 and 1.2 only) Intel Centrino Wireless-N 1000 802.11b/g/n 1x2 Realtek RTL8191SE 802.11b/g/n 1x1 WiFi - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 50
cover and memory/wireless compartment cover) Broadcom 4313 802.11b/g/n 1x1 WiFi and 2070 Bluetooth 2.1+EDR Combo adapter (BT3.0+HS ready) (for models 1.2 and 1.3 only) Display bracket (with hinges) Power connector with cable USB board with cable RTC battery Bluetooth cable (for models 1.0, 1.1 and - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 51
-in) WXGA Brightview display assembly for use with integrated microphone and webcam; HP, white (for models 1.1 only) Display back cover, HP, silver (for models 1.1, 1.2 and 1.3 only) Display back cover, HP, white (for model 1.1 only) Top cover (includes Touchpad and bracket, button board, and cable - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 52
webcam; HP, imperial blue (for models 1.2 and 1.3 only) Display back cover, HP, charcoal (for models 1.2 and 1.3 only) Display back cover, HP, imperial blue (for models microphone and webcam; Presario, velvet red (for model 1.2 only) Display back cover, Presario, velvet red (for model 1.2 only) - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 53
(includes replacement thermal material) for use in models with UMA graphics subsystem memory, HM55 WiMAX chipset, with HDMI card reader Ralink 5390GN 802.11b/g/n 1x1 WiFi Adapter (for model 1.3 only) 35.6 cm (14-in) WXGA Brightview display assembly for use with integrated microphone and webcam; HP - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 54
44 Chapter 3 Illustrated parts catalog ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 55
during disassembly and reassembly can damage plastic parts. Use care when handling the plastic parts. Apply pressure only at the points designated in the maintenance instructions. ENWW Preliminary replacement requirements 45 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 56
twisting, or tearing cables. Be sure that cables are routed in such a way that they cannot be caught or snagged by parts being removed or replaced. Handle flex cables with extreme care; these cables tear easily. Drive handling CAUTION: Drives are fragile components that must be handled with care. To - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 57
in their electrostatic-safe containers until you are ready to install them. Use nonmagnetic tools. Before touching an electronic 4,000 V 5,000 V 26,500 V 20,000 V 21,000 V 11,000 V 55% 7,500 V 3,000 V 400 V 400 V 2,000 V 3,500 V 7,000 V 5,000 V ENWW Preliminary replacement requirements 47 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 58
material. ● Use a wrist strap connected to a properly grounded work surface and use properly grounded tools and equipment. ● Use conductive field service tools, such as cutters, screwdrivers, and vacuums. ● When fixtures must directly contact dissipative surfaces, use fixtures made only of static - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 59
or boot straps) can be used at standing workstations and are compatible with most types of shoes or boots. On conductive floors or dissipative floor mats, use foot or floor mats with hard ties to the ground ● Field service kits ● Static awareness labels ● Material-handling packages ● Nonconductive - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 60
, located in the battery bay of the computer, provides important information that you may need when contacting technical support. (1) Product name (2) Serial number (3) Product number (4) Warranty period (5) Model description (select models) 50 Chapter 4 Removal and replacement procedures ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 61
Computer feet Description Rubber Feet Kit Spare part number 600184-001 The computer feet are adhesive-backed rubber pads. The feet attach to the base enclosure in the locations illustrated below. ENWW Component replacement procedures 51 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 62
it out of the computer (3). To insert the battery, insert the rear edge of the battery into the battery bay and pivot the front edge downward until the battery is seated. The battery release latch automatically locks the battery into place. 52 Chapter 4 Removal and replacement procedures ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 63
320-GB 7200 RPM 250-GB 7200 RPM 160-GB 7200 RPM (for models 1.0, 1.1 and 1.2 only) Hard drive hardware kit (includes screws and hard AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 52). Remove the hard drive: 1. Position the computer with the - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 64
hard drive to the computer. 5. Use the hard drive bracket to lift the hard drive out (2) of the hard drive compartment. 54 Chapter 4 Removal and replacement procedures ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 65
6. Disconnect the hard drive cable from the system board. 7. Remove the hard drive. 8. If it is necessary to replace the hard drive bracket, remove the four Phillips PM3.0×3.0 screws (1) that secure the hard drive bracket to the hard drive 9. Lift the bracket (2) straight up. - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 66
LightScribe with SuperMulti DVD±R/RW Double-Layer, velvet red (for models 1.2 and 1.3 only) 624968-001 Before removing the optical unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 52). Remove the optical drive: 1. Position the replacement procedures ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 67
4. Remove the optical drive (3). 5. If it is necessary to replace the optical drive bracket, position the optical drive with the optical drive Remove the optical drive bracket (2). Reverse the above procedure to reassemble and install the optical drive. ENWW Component replacement procedures 57 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 68
only) 582562-002 Realtek RTL8191SE 802.11b/g/n 1x1 WiFi Adapter (for models 1.0, 1.1 and 1.2 only) 593533-001 Ralink RT3090BC4 802.11b/g/n 1x1 WiFi and Bluetooth 2.1+EDR Combo Adapter (BT3.0+HS ready) (for model 1.2 and 1.3 only) 602992-001 58 Chapter 4 Removal and replacement procedures ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 69
WiFi and 2070 Bluetooth 2.1+EDR Combo adapter (BT3.0+HS ready) 600370-001 (for models 1.2 and 1.3 only) Ralink 5390GN 802.11b/g/n 1x1 WiFi Adapter (for model the AC adapter from the computer. 4. Remove the battery (see Battery on page 52). 5. Remove the hard drive cover replacement procedures 59 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 70
by the governmental agency that regulates wireless devices in your country or region. If you replace the module and then receive a warning message, remove the module to restore computer functionality, and then contact technical support through Help and Support. NOTE: WLAN modules are designed with - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 71
MB, PC3 10600, 1333-MHz 4-MB, PC3 10600, 1333-MHz (for models 1.2 and 1.3 only) Spare part number 598856-001 598859-001 599092-001 Before and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 52). Remove the memory module: 1. Turn the computer upside - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 72
the slot at an angle. NOTE: Memory modules are designed with a notch (3) to prevent incorrect insertion into the memory module slot. Reverse this procedure to install a memory module. 62 Chapter 4 Removal and replacement procedures ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 73
(see Battery on page 52). 5. Remove the hard drive (see Hard drive on page 53) 6. Remove the mini-card compartment cover (see WLAN module on page 58). Remove the keyboard: 1. Turn the computer upside down with the front toward you. 2. Remove the six Phillips PM2.5×6.5 screws that secure the keyboard - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 74
the display. 7. Release the zero insertion force (ZIF) connector (1) to which the keyboard cable is attached and disconnect the keyboard cable (2) from the system board. 8. Remove the keyboard. Reverse this procedure to install the keyboard. 64 Chapter 4 Removal and replacement procedures ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 75
(see Battery on page 52). b. Optical drive (see Optical drive on page 56). c. Keyboard (see Keyboard on page 63). Remove the switch cover: 1. Turn the computer upside down with the front toward you. 2. Remove the four screw covers (1) at the front edge of the computer. ENWW Component replacement - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 76
button board cable (2) is connected and disconnect the cable from the system board. 8. Disconnect the speaker cable (3) from the system board. 66 Chapter 4 Removal and replacement procedures ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 77
cover, disengage the rear edge of the top cover (2) from the base enclosure, and then remove the cover from the computer (3). Reverse this procedure to install the switch cover. ENWW Component replacement procedures 67 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 78
computer. 4. Remove the battery (see Battery on page 52). 5. Remove the following components: a. Optical drive (see Optical drive on page 56) b. Keyboard (see Keyboard on page 63) c. cover. Reverse this procedure to install the speaker assembly. 68 Chapter 4 Removal and replacement procedures ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 79
(see Battery on page 52). 5. Remove the following components: a. Hard drive (see Hard drive on page 53) b. Optical drive (see Optical drive on page 56) c. Keyboard (see Keyboard on page 63) d. Top cover ( the top cover. 3. Remove the power button board (2). ENWW Component replacement procedures 69 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 80
(see Battery on page 52). 5. Remove the following components: a. Hard drive (see Hard drive on page 53) b. Optical drive (see Optical drive on page 56) c. Keyboard (see Keyboard on procedure to reassemble and install the TouchPad button board. 70 Chapter 4 Removal and replacement procedures ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 81
(for models 1.0 and 1.1 only) High-speed 56K modem for use in Australia and New Zealand (for models 1.0 Battery on page 52). 5. Remove the following components: a. Hard drive (see Hard drive on page 53) b. Optical drive (see Optical drive on page 56) c. Keyboard (see Keyboard replacement procedures 71 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 82
4. Lift up on the front of the modem module (3) to disconnect it from the system board. 5. Remove the modem module. Reverse the above procedure to install the modem module, and be sure that the connector on the bottom of the modem module connects firmly into the system board. 72 Chapter 4 Removal - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 83
the Bluetooth module cable (1) from the system board. 3. Remove the Bluetooth module and cable from the clips in the base enclosure (2). 4. Remove the Bluetooth module (3) from the base enclosure. Reverse the above procedure to install the Bluetooth module. ENWW Component replacement procedures - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 84
(see Battery on page 52). 5. Remove the following components: a. Hard drive (see Hard drive on page 53) b. Optical drive (see Optical drive on page 56) c. Keyboard (see Keyboard on page computer. Reverse this procedure to install the USB board. 74 Chapter 4 Removal and replacement procedures ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 85
(see Battery on page 52). 5. Remove the following components: a. Hard drive (see Hard drive on page 53) b. Optical drive (see Optical drive on page 56) c. Keyboard (see Keyboard on base enclosure. Reverse this procedure to install the power connector cable. ENWW Component replacement procedures 75 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 86
Brightview display assembly for use with integrated microphone and webcam; Presario, velvet red (for model 1.2 only) 35.6 cm (14-in) WXGA Brightview display assembly for use with integrated microphone and webcam; HP, velvet red (for models 1.2 and 1.3 only) Spare part number 592146-001 597617-001 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 87
Disconnect the microphone cable (3) from the system board. 6. Disconnect the webcam cable (2) from the system board. CAUTION: Support the display assembly when removing the display screws in the following steps. Failure to support the display assembly can result in damage to the assembly and other - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 88
9. If it is necessary to replace any of the display assembly internal components, remove the following screw covers (4). The display bezel is available using spare part number 592147-001 for HP computers, and 592148-001 for Presario computers. 78 Chapter 4 Removal and replacement procedures ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 89
12. If it is necessary to replace the webcam module, disconnect the webcam cable (1) from the module. Lift the webcam from the double-sided tape on the display back cover, and remove the webcam. 13. If it is necessary to replace the display panel, remove the eight Phillips PM2.5×5.0 screws (1) that - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 90
display hinges (2) from the display. The display bracket and hinge set is available using spare part number 600627-001. 17. If it is necessary to replace the wireless antennas and cables, remove the adhesive strip (1) that secures each antenna to the display back cover. 18. Detach the - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 91
wireless antennas and cables are included in the display cable kit, spare part number 592151-001. 21. If it is necessary to remove the webcam cable, remove the cable from the adhesive strips (1) along the cable path on the display back cover, and then remove the webcam cable (2). The webcam - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 92
and microphone cable (3). The microphone and cable is included in the display cable kit, spare part number 592151-001, Reverse this procedure to reassemble and install the display assembly. 82 Chapter 4 Removal and replacement procedures ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 93
board GL40 UMA HDMI ROM 2M (for model 1.3 only) 639266-001 When replacing the system board, be sure that the following components are removed from the defective system board and installed on the replacement system board: ● RTC battery (see RTC battery on page 89) ● Memory modules (see Memory - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 94
cable (see Bluetooth module on page 73) ● USB board cable (see USB board on page 74) 1. Turn the computer upright with the right side toward you. 2. Remove the three Phillips PM2.5×3.0 screws that secure the system board to the computer. 84 Chapter 4 Removal and replacement procedures ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 95
the connectors on the left side of the system board clear the base enclosure, and then remove the system board. 6. If it is necessary to replace the modem module cable, remove the RJ-11 connector (1) from the clip built into the base enclosure. 7. Remove the modem module cable (2) from the routing - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 96
components are removed from the defective system board and installed on the replacement system board: ● Fan/heat sink assembly (see Fan/heat sink assembly on page 91) ● Processor (see Processor on page 94) Reverse the preceding procedure to install the system board. 86 Chapter 4 Removal and - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 97
Battery on page 52). 5. Remove the following components: a. Hard drive (see Hard drive on page 53) b. WLAN (see WLAN module on page 58) c. Optical drive (see Optical drive on page 56) d. Keyboard (see Keyboard on optical drive connector to the system board. ENWW Component replacement procedures 87 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 98
2. Release the cable from the clips on the base enclosure (2), and then remove the cable (3). 88 Chapter 4 Removal and replacement procedures ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 99
drive on page 56) d. Keyboard (see Keyboard on page 63) e. Top cover (see Top cover on page 65) f. Speaker assembly (see Speaker assembly on page 68) g. Display assembly (see Display assembly on page 76) h. System board (see System board on page 83) Remove the RTC battery: 1. Turn the system board - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 100
3. Remove the RTC battery (2). Reverse this procedure to install the RTC battery. 90 Chapter 4 Removal and replacement procedures ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 101
graphics 634651-001 subsystem memory (includes thermal replacement material) (for model 1.3 only) NOTE: To properly ventilate Battery on page 52). 5. Remove the following components: a. Hard drive (see Hard drive on page 53) b. Optical drive (see Optical drive on page 56) c. Keyboard (see Keyboard - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 102
(4) each time the fan/heat sink assembly is removed. Thermal pads and thermal paste must be installed on all surfaces before the fan/heat sink assembly is reinstalled. NOTE: Thermal pads and thermal systems with discrete graphics subsystems. 92 Chapter 4 Removal and replacement procedures ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 103
assembly (1) and (3), and the processor component (2), each time the fan/heat sink assembly is removed. Thermal pads and thermal paste must be installed on all surfaces before the fan/heat sink assembly is reinstalled. The following illustration shows the locations for thermal material on systems - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 104
-480M processor 2.66-GHz 3MB 35W (for model 1.3 only) Intel Pentium P6300 - 2.26-GHz 3M (for model 1.3 only) Intel Celeron Mobile 925 - 2.3-GHz 1M L2 cache (for model 1.3 only) Thermal pad kit for processor Spare 635500-001 636636-001 634428-001 94 Chapter 4 Removal and replacement procedures ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 105
(see Battery on page 52). 5. Remove the following components: a. Hard drive (see Hard drive on page 53) b. Optical drive (see Optical drive on page 56) c. Keyboard (see Keyboard on page 63) d. Top cover -half turn counterclockwise until you hear a click. ENWW Component replacement procedures 95 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 106
up and remove it. NOTE: The gold triangle (3) on the processor must be aligned with the triangle icon (4) embossed on the processor socket when you install the processor. Reverse this procedure to install the processor. 96 Chapter 4 Removal and replacement procedures ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 107
Utility Computer Setup in Windows 7 To view the drives installed on the computer, select Start > Computer. On models with a secondary hard drive key for Startup Menu" message is displayed in the lower-left corner of the screen, press f10. - or - 1. Open Setup Utility by turning on or restarting - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 108
and selecting in Setup Utility Because Setup Utility is not Windows based, it does not support the TouchPad. Navigation and selection are by keystroke. ● To for Startup Menu" message is displayed in the lower-left corner of the screen, press f10. - or - Open Setup Utility by turning on or restarting - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 109
computer. While the "Press the ESC key for Startup Menu" message is displayed in the lower-left corner of the screen, press esc. When the Startup Menu is displayed, press f10. 2. Use the arrow keys to select Exit > when you restore the factory default settings. ENWW Computer Setup in Windows 7 99 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 110
Changes, and then press enter. After either choice, the computer restarts in Windows. Setup Utility menus The menu tables in this section provide an overview of ● View specification information about the processor, memory size, system BIOS, and keyboard controller version (select models only). - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 111
Support Button Sound (select models only) Virtualization Technology (select models only) Processor C6 State (select models only) LAN Power Saving (select models only) Card Reader/1394 Power Saving (select models ● Boot Order―Set the boot order for: ◦ Notebook Hard Drive ◦ Internal CD/DVD ROM Drive ◦ - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 112
guide may not be supported by your computer. NOTE: Pointing devices are not supported in Computer Setup. You must use the keyboard to navigate and make selections. NOTE: An external keyboard Ignore Changes And Exit. Then follow the instructions on the screen. ● To save your preferences and exit - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 113
To save your preferences and exit Computer Setup, use the arrow keys to select File > Save Changes And Exit. Then follow the instructions on the screen. Your preferences go into effect when the computer restarts. NOTE: Your password settings and security settings are not changed when you restore the - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 114
be supported by your computer. File menu Select System information Restore Defaults Ignore Changes And Exit Save Changes And Exit To do this ● View identification information for the computer. ● View specification information for the processor, cache and memory size, and system ROM. Replace the - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 115
Security menu NOTE: Some of the menu items listed in this section may not be supported by your computer. Select Setup Password Power-On Password Password Options DriveLock Passwords System IDs Disk Sanitizer To do this Enter, change, or delete a setup - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 116
device: Notebook hard support allows the following: ◦ Use of a USB keyboard in Computer Setup even when a your operating system is not running. ◦ Startup from bootable USB devices, including a hard drive, diskette drive, or optical drive connected by a USB port to the computer. ● Enable/disable BIOS - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 117
embedded WLAN Device Radio. ● Enable/disable embedded Bluetooth Device Radio. ● Enable/disable Network Interface Controller (NIC) ● Enable/disable LAN/WLAN Switching. ● Enable/disable Wake on LAN. ● Enable/disable the integrated camera (webcam) ● Enable/disable USB port. ● Enable/disable ExpressCard - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 118
108 Chapter 5 Setup Utility ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 119
6 Specifications Computer specifications Dimensions Depth Width Height (front to rear) Weight (lowest weight configuration) Input power Operating voltage Operating thermal limits for plastic surfaces. The computer operates well within this range of temperatures. ENWW Computer specifications 109 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 120
35.6-cm (14.0-in) display specifications Dimensions Height Width Diagonal Number of colors Contrast ratio Brightness Pixel resolution Pitch Format Configuration 800; HD: 1366 × 768 RGB vertical stripe LED 80 × 25 4.0 W ±40° horizontal, +120/-40° vertical (typical) 110 Chapter 6 Specifications ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 121
5°C to 55°C (41°F to 131°F) *1 GB = 1 billion bytes when referring to hard drive storage capacity. Actual accessible capacity is less. Actual drive specifications may differ slightly. NOTE: Certain restrictions and exclusions apply. Contact technical support for details. ENWW Hard drive - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 122
CD-RW, DVD+R, DVD+RW, DVD-R, DVD-RW, DVD-RAM < 230 ms < 175 ms 2 MB 3,600 KB/sec 10,800 KB/sec 3,600 KB/sec 2,400 KB/sec 10,800 KB/sec 5,400 KB/sec 10,800 KB/sec 5,400 KB/sec 2,700 KB/sec 6,750 KB/sec Multiword DMA Mode 112 Chapter 6 Specifications ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 123
DL Drive specifications Applicable disc Read DL, DVD-ROM, DVD+R, DVD+R-DL, DVD+RW, DVD-R, DVD-R-DL, DVD-RW, DVD-RAM (Ver.2), CD-DA, CD-ROM (mode 1 and mode 2), CD-ROM XA (mode 2, form 18,000 KB/sec 3,600 KB/sec 2,400 KB/sec 10,800 KB/sec 5,400 KB/sec 10,800 KB/sec 5,400 KB/sec 2,700 KB/sec 6,750 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 124
you can manually change the resource by type ● Resources by connection To view resource settings in Windows XP: 1. window, select the Hardware tab. 4. Click Device Manager. 5. On the View menu, click one of the following: ● Resources by type ● Resources by connection 114 Chapter 6 Specifications - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 125
or driver without performing a full system recovery. ● Performing a full system recovery (Recovery Manager software feature). With Recovery click Disk Management. If the partition is present, an HP Recovery drive is listed in the window. Windows 7 To protect your information, back up your files and - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 126
on your computer model, you may have one of the following backup and recovery solutions: ● Roxio BackOnTrack ● HP Recovery Manager NOTE: For detailed information, perform a search for these topics in Help and Support. Creating recovery discs HP recommends that you create recovery discs to be - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 127
Save customized settings in a window, toolbar, or menu bar by taking a screen shot of your settings. The screen shot can be a time-saver on the type of optical drive installed in your computer. NOTE: DVDs store more information than CDs, so using them for backup reduces the number of recovery discs - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 128
Restore. 2. Follow the on-screen instructions to set up and create a backup. NOTE: Windows® includes the User Account Control feature to improve the security of your computer. You may be prompted for your permission or password for tasks such as installing software, running utilities, or changing - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 129
System Protection tab. 4. Click System Restore. 5. Follow the on-screen instructions. Performing a recovery NOTE: You can recover only files that you have previously backed up. HP recommends that you use HP Recovery Manager to create a set of recovery discs (entire drive backup) as soon as you set - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 130
optical drive and restart the computer. 3. Follow the on-screen instructions. Recovering from the dedicated recovery partition (select models only) NOTE: Computers with an SSD may not have a recovery partition. If the computer does not have a recovery partition, you will not be able to recover using - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 131
recovery tool reinstalls the original operating system and HP programs and drivers that were installed at the factory. Software, drivers, and updates not installed by HP must be manually "Press for recovery" message is displayed on the screen. 3. Follow the on-screen instructions. NOTE: If you - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 132
122 Chapter 7 Backup and recovery ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 133
8 Connector pin assignments Audio-out (headphone) Pin Signal 1 Audio out, left channel 2 Audio out, right channel 3 Ground Audio-in (microphone) Pin Signal 1 Audio signal in 2 Audio signal in 3 Ground ENWW Audio-out (headphone) 123 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 134
External monitor Pin Signal 1 Red analog 2 Green analog 3 Blue analog 4 Not connected 5 Ground 6 Ground analog 7 Ground analog 8 Ground analog 9 +5 VDC 10 Ground 11 Monitor detect 12 DDC 2B data 13 Horizontal sync 14 Vertical sync 15 DDC 2B clock 124 Chapter 8 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 135
RJ-11 (modem) Pin 1 2 3 4 5 6 RJ-45 (network) Signal Unused Tip Ring Unused Unused Unused Pin 1 2 3 4 5 6 7 8 ENWW Signal Transmit + Transmit Receive + Unused Unused Receive Unused Unused RJ-11 (modem) 125 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 136
HDMI Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Signal TMDS data 2+ TMDS data 2 shield TMDS data 2- TMDS data 1+ TMDS data 1shield TMDS data 1- TMDS data 0+ TMDS data 0 shield TMDS data 0- TMDS clock+ TMDS clock shield TMDS clock- CEC No connect DDC clock DDC data Ground +5V power Hot - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 137
Universal Serial Bus Pin Signal 1 +5 VDC 2 Data - 3 Data + 4 Ground ENWW Universal Serial Bus 127 - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 138
128 Chapter 8 Connector pin assignments ENWW - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 139
9 Power cord set requirements The wide range input feature of the computer permits it to operate from any line voltage from 100 to 120 volts AC or from 220 to 240 volts AC. The 3-conductor power cord set included with the computer meets the requirements for use in the country or region where the - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 140
Requirements for specific countries or regions Country/region Accredited agency Applicable note number Australia EANSW region where it will be used. 5. The flexible cord must be Type VCTF, 3-conductor, 0.75-mm² conductor size. Power cord set fittings (appliance coupler and wall plug) must - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 141
Industries Alliance (EIA) Web site at http://www.eiae.org. This section provides disassembly instructions for the display instructions. Specific details, such as screw sizes, quantities, and locations, and component shapes and sizes, can vary from one computer model to another. ENWW Battery - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 142
Perform the following steps to disassemble the display assembly: 1. Remove all screw covers (1) and screws (2) that secure the display bezel to the display assembly. 2. Lift up and out on the left and right inside edges (1) and the top and bottom inside edges (2) of the display bezel until the bezel - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 143
4. Disconnect all display panel cables (1) from the display inverter and remove the inverter (2). 5. Remove all screws (1) that secure the display panel assembly to the display enclosure. 6. Remove the display panel assembly (2) from the display enclosure. 7. Turn the display panel assembly upside- - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 144
10. Remove the display panel frame (2) from the display panel. 11. Remove the screws (1) that secure the backlight cover to the display panel. 12. Lift the top edge of the backlight cover (2) and swing it outward. 13. Remove the backlight cover. 14. Turn the display panel right-side up. 134 Chapter - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 145
15. Remove the backlight cables (1) from the clip (2) in the display panel. 16. Turn the display panel upside-down. WARNING! The backlight contains mercury. Exercise caution when removing and handling the backlight to avoid damaging this component and causing exposure to the mercury. 17. Remove the - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 146
18. Remove the backlight from the backlight frame. 19. Disconnect the display panel cable (1) from the LCD panel. 20. Remove the screws (2) that secure the LCD panel to the display rear panel. 21. Release the LCD panel (3) from the display rear panel. 22. Release the tape (4) that secures the LCD - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 147
113 Bluetooth module removal 73 spare part number 29, 73 boot options 101, 106 boot order 101, 106 button sound 101 buttons power 14 TouchPad right/left 12 C cable kit, spare part number 30 cables, service considerations 46 camera module removal 79 spare part number 79 camera, product description - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 148
display specifications 110 full system recovery 115 function Windows applications 15 Windows logo 15 L LAN Power Saving 101 language support 101 latch, battery release 19 legacy support, USB 102, 106 light power 13 lights caps lock 13 Digital Media Slot 18 optical drive 17 webcam 16 wireless - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 149
5 keyboard 9 memory module 4 microphone 6 modem module 7 operating system 9 optical drives 6 pointing devices 9 ports 8 power requirements 9 processors 1 product name 1 security 9 serviceability 9 wireless 7 product name 1 R recovering a program or driver 115 recovering from the dedicated recovery - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 150
18, 19 Virtualization Technology 101 W webcam identifying 16 webcam light, identifying 16 Webcam module spare part number 32 Windows applications key, identifying 15 Windows logo key, identifying 15 wireless antenna removal 80 wireless antennas 20 wireless antennas and cables removal 81 spare part - Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 151
- Compaq Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook - Page 152
Compaq Presario CQ42 Notebook
PC and HP G42 Notebook PC
Maintenance and Service Guide
SUMMARY
This guide is a troubleshooting reference used for maintaining and servicing the computer. It provides
comprehensive information on identifying computer features, components, and spare parts;
troubleshooting computer problems; and performing computer disassembly procedures.