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- HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 1
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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 4
iv MSG revision history ENWW - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 6
vi Safety warning notice ENWW - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 8
...76 System board ...83 Optical drive SATA cable and connector 87 RTC battery ...89 Fan/heat sink assembly ...91 Processor ...94 5 Setup Utility ...97 Computer Setup in Windows 7 ...97 Starting Setup Utility ...97 Using Setup Utility ...97 Changing the language of Setup Utility 97 Navigating - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 10
Requirements for specific countries or regions 130 10 Recycling ...131 Battery ...131 Display ...131 Index ...137 x ENWW - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 11
1 Product description Category Description HP G42 Product Name Processors Compaq Presario CQ42 Notebook PC HP G42 Notebook PC Intel® Arrandale™ i7-620M, 2.66-GHz, SC turbo, 4-MB L3 cache i5-540M, 2.53-GHz, SC turbo, 3-MB L3 cache i5-520M, 2.4-GHz, SC turbo, 3- - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 12
)/HD Graphics with shared video memory (memory size is dynamic change): ● Up to 251 MB on computers with 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 13
Category Description HP G42 Discrete Intel UMA (integrated)/GMA 4500M - GL40 chipset with shared video memory (memory size is dynamic change): ● Up system memory HP G42 UMA Compaq Presario CQ42 Discrete Compaq Presario CQ42 Compaq Presario CQ42 UMA Models UMA Models 150-199 100-149 √ ENWW - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 14
MHz 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 15
● 1024 MB (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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 16
drive only 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 17
4312G 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 18
Category Description HP G42 Discrete Realtek RTL8191SE √ 802.11b/g/n 1x1 WiFi Adapter plus Broadcom 2070 Bluetooth 2.1+EDR Adapter External 5-in-1 Digital Media √ media card Slot; supports SD, (select models MMC, MS, Mspro, only ) xD Single port √ configured as either HDMI or 5- - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 19
Windows 7 Home Basic (32 & 64 bit) 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 20
10 Chapter 1 Product description ENWW - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 21
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 can also add - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 27
-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. Connects an - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 28
monitor port (2) Vent (3) HDMI port (select models only) (4) RJ-45 (network) jack (5) USB ports (2) (6) Audio-in (microphone) jack (7) Audio-out (headphone) jack (8) Digital Media Slot (select models only) (9) Drive light Description Connects an external VGA monitor or projector - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 29
Description Holds the battery. Releases the battery from the battery bay. Enable 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 31
Component (1) Power cord* (2) AC adapter (3) Battery* *Power cords vary in appearance by country or region in which 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 32
22 Chapter 2 External component identification ENWW - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 35
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 (UMA) graphics subsystem memory 595832-001 ● For use in models that use discrete graphics subsystem memory - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 36
use in models that use discrete graphics subsystem memory (for model 1.3 -001 System boards (includes replacement thermal material) for use 637584-001 ● GL40 UMA 2M system board with HDMI card reader (for model 1.3 only) 639266-001 Wireless/memory module mini-card compartment cover RTC battery - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 37
Guinea-Bissa, Guyana, Haiti, Honduras, Hong Kong, Hungary, Iceland, India, Indonesia, Ireland, Italy, Ivory Coast, Jamaica, Japan, Jordan, Kazakhstan , Zambia, and Zimbabwe Intel Centrino Wireless-N 1000 802.11b/g/n 1x2 593530-001 Broadcom 4312G 802.11b/g WiFi Adapter (halogen free) ● For use - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 39
-001 ● For 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 40
kit; see Mass storage devices on page 34) 610791-001 Optical drive cable (included in the cable kit) 610791-001 Optical drives (12.7 mm, SATA, fixed) ● Blu-ray Disc ROM LightScribe with SuperMulti DVD±R/RW Double-Layer, matte black 600173-001 ● Blu-ray Disc ROM LightScribe with SuperMulti DVD - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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) - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 42
Item (6) (7) Description (4) Webcam cable (5) Antennas and cables Display back cover ● Presario, matte black ● Presario, biscotti ● 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 44
hard drive bracket, not illustrated) 513771-001 Hard drive cable/adapter (included in the cable kit) 610791-001 (2) Optical drives (12.7 mm, SATA, fixed) ● Blu-ray Disc ROM LightScribe with SuperMulti DVD±R/RW Double-Layer, matte black 600173-001 ● Blu-ray Disc ROM LightScribe with SuperMulti - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 45
Item Description ● DVD±RW SuperMulti DL Drive with LightScribe, biscotti ● DVD±RW SuperMulti DL Drive with LightScribe, silver (for models 1.1, 1.2 and 1.3 only) ● DVD±RW SuperMulti DL Drive with LightScribe, white (for model 1.1 only) ● DVD±RW SuperMulti DL Drive with LightScribe, charcoal (for - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 46
AC adapter ● 65-W Smart power adapter with power factor correction (PFC) for use in India Power cord, AC, 3 wire, black, 1.83-m ● For use in Argentina ● 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 47
cord, AC, 3-pin, black,1.83-m, for use in India Modem module, high-speed 56K modem for use in all Processor, Intel Celeron processor 900 - 2.2-GHz Bluetooth module without cable (for models 1.0, 1.1 and GB 7200 RPM Atheros AR9285 802.11 a/b/g/n 2x2 WiFi adapter for use in Canada, the Cayman Islands, - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 48
Description Atheros AR9285 802.11 a/b/g/n 2x2 WiFi adapter for use in Afghanistan, Albania, Honduras, Hong Kong, Hungary, Iceland, India, Ireland, Italy, The Ivory Coast, integrated microphone and webcam; Presario, matte black Display bezel, HP, for use with microphone and webcam 38 Chapter - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 50
HP, biscotti Webcam module WiFi and Bluetooth 2.1+EDR Combo Adapter (BT3.0+HS ready) (for models 1.2 and later) Hard disk drive, 640-GB 5400 RPM (for models 1.1, 1.2 and 1.3 only) Touchpad board (includes cable) System board (includes replacement thermal material) for use in models with UMA graphics - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 51
for use with integrated microphone and webcam; HP, silver (for models 1.1, 1.2 and SATA 2.5IN System board (includes replacement thermal material) for use in models with discrete graphics with power factor correction (PFC) for use in India Processor, Intel Arrandale i3-370M 2.4-GHz (for models - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 52
graphics subsystem memory (for models 1.1 only) Base enclosure with HDMI card reader, biscotti Base enclosure, biscotti Base enclosure with HDMI card reader, matte black Base enclosure, matte black 35.6 cm (14-in) WXGA Brightview display assembly for use with integrated microphone and webcam; HP - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 54
44 Chapter 3 Illustrated parts catalog ENWW - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 55
to complete the removal and replacement procedures: ● Flat-bladed screwdriver ● Magnetic screwdriver ● Phillips P0 and P1 screwdrivers Service considerations The following sections include only at the points designated in the maintenance instructions. ENWW Preliminary replacement requirements 45 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 56
Cables and connectors CAUTION: When servicing the computer, be sure that cables are placed in 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 58
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 or removing connectors or test equipment. 48 Chapter 4 Removal and replacement procedures ENWW - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 59
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 mats with hard ties to the ground ● Field service kits ● Static awareness labels ● Material-handling packages Preliminary replacement requirements 49 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 60
, replaced, or loosened when servicing the computer. Make special note of each screw size and location during removal and replacement. Serial number The serial number label, located in the battery bay of the computer, provides important information that you may need when contacting technical support - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 63
the computer by first unplugging the power cord from the 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 front toward you. 2. Remove the two Phillips PM2.5×5.0 screws (1) that - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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. - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 66
cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 52). Remove the optical drive: 1. Position the computer upside down with the front toward left to release the optical drive. 56 Chapter 4 Removal and replacement procedures ENWW - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 68
, Hong Kong, Hungary, Iceland, India, Ireland, Italy, The Ivory Coast 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 52). 5. Remove the hard drive cover (see replacement procedures 59 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 71
the computer by first unplugging the power cord from the AC outlet 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 down with the front toward you. 2. Loosen the two Phillips PM2.5×5.0 captive - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 73
: 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 to the computer. 3. Turn the computer display-side up with the front toward you. 4. Open the computer as far as possible. ENWW Component replacement procedures 63 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 79
cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 52). 5. Remove the following components: a. Hard drive (see Hard drive on page the top cover. 3. Remove the power button board (2). ENWW Component replacement procedures 69 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 80
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 (see Top cover on page 65) Remove the TouchPad above procedure to reassemble and install the TouchPad button board. 70 Chapter 4 Removal and replacement procedures ENWW - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 81
power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 52). 5. Remove the following components: a. Hard drive (see Hard drive on page the modem module cable (2) from the modem module. ENWW Component replacement procedures 71 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 84
the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 52). 5. Remove the following components: a. Hard drive (see Hard drive the computer. Reverse this procedure to install the USB board. 74 Chapter 4 Removal and replacement procedures ENWW - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 85
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 (see Top cover on page 65)) Remove the power connector base enclosure. Reverse this procedure to install the power connector cable. ENWW Component replacement procedures 75 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 86
microphone and webcam; Presario, biscotti 35.6 cm (14-in) WXGA Brightview display assembly for use with integrated microphone and webcam; HP, biscotti 35 adapter from the computer. 4. Remove the battery (see Battery on page 52). 5. Disconnect the wireless antenna cables from the WLAN module (see - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 91
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 cable is included in the display cable kit, spare part number 592151-001, ENWW Component replacement procedures 81 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 93
-001 System 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 94
the battery (see Battery on page 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 97
Optical drive SATA cable and connector Description from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 52). 5. Remove the following components: a. Hard drive (see Hard drive on the system board. ENWW Component replacement procedures 87 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 99
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 upside down. 2. Release the RTC battery from the clips on the system board (1). ENWW Component replacement procedures 89 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 100
3. Remove the RTC battery (2). Reverse this procedure to install the RTC battery. 90 Chapter 4 Removal and replacement procedures ENWW - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 101
use GL40 Universal Memory Architecture (UMA) graphics subsystem memory (includes thermal replacement material) 606573-001 Thermal pad kit for and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 52). 5. Remove the following components: a. Hard drive - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 102
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 material on systems with discrete graphics subsystems. 92 Chapter 4 Removal and replacement procedures ENWW - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 103
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 with UMA graphics subsystems. Reverse this procedure to install the fan/heat sink assembly. ENWW Component replacement procedures 93 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 104
-001 625823-001 625831-001 534419-001 625825-001 625830-001 634692-001 634693-001 635500-001 636636-001 634428-001 94 Chapter 4 Removal and replacement procedures ENWW - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 105
cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 52). 5. Remove the following components: a. Hard drive (see Hard drive on page one-half turn counterclockwise until you hear a click. ENWW Component replacement procedures 95 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 107
5 Setup Utility Computer Setup in Windows 7 To view the drives installed on the computer, select Start > Computer. On the screen, press esc. 2. When the Startup Menu is displayed, press f10. Using Setup Utility Changing the language of Setup Utility The following procedure explains how to change - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 108
Changes, and then press enter. Your change goes into effect immediately. Navigating and selecting in Setup Utility Because Setup Utility is not Windows based, it does not support Menu" message is displayed in the lower-left corner of the screen, press f10. - or - Open Setup Utility by turning on - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 109
-left corner of the screen, press esc. When the Changes, and then press enter. Setup Utility default settings go into effect when the computer restarts. NOTE: Your password, security, and language settings are not changed when you restore the factory default settings. ENWW Computer Setup in Windows - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 110
may not be supported by your computer. Main menu Select System information To do this ● View and change the system time and date. ● View identification information about the computer. ● View specification information about the processor, memory size, system BIOS, and keyboard controller version - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 only) Fan Always On Action Keys Mode Boot Options To do this Change ◦ Notebook Hard - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 to select File > Ignore Changes And Exit. Then follow the instructions on the screen. ● To save your - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 113
box opens, press f10. 4. 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 115
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 password. Enter, change, or delete a power-on password. ● Enable/disable stringent - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 118
108 Chapter 5 Setup Utility ENWW - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 121
Hard drive specifications 750 GB* 500-GB* 320-GB* 250-GB* 160-GB* Dimensions Height 9.5 mm 9.5 mm 9.5 mm 9.5 mm 9.5 mm Width 70 mm 70 mm 70 mm 70 mm 70 mm Weight 101 g 101 g 101 g 101 g 101 g Interface type SATA SATA SATA SATA SATA Transfer rate 100 MB/sec 100 MB/sec - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 124
specifications You can use Device Manager to get a graphical manually change the resource settings in Device Manager to be sure each setting is unique. CAUTION: Improperly changing following: ● Resources by type ● Resources by connection To view resource settings in Windows XP: 1. Select Start > My - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 125
utility. Therefore, HP recommends that you download the Disaster Recovery utility SoftPaq, and then extract it to a USB flash drive as soon as possible after software setup. For details, refer to "Downloading and extracting the Disaster Recovery utility" later in this section. ENWW Windows 7 115 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 126
finished creating the recovery discs. The next time you open Recovery Manager, you will be prompted to continue the disc creation process. To create a set of recovery discs: 1. Select Start > All Programs > Recovery Manager > Recovery Disk Creation. 2. Follow the on-screen instructions. 116 Chapter - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 127
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 required. ● When backing up to discs, number each disc before inserting it into the optical drive of the computer. ENWW Windows 7 117 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 128
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 Windows settings. Refer to Help and Support for more information. 118 Chapter 7 Backup and recovery ENWW - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 129
a specific point in time. You can then recover back to that point if you want to reverse subsequent changes made 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 132
122 Chapter 7 Backup and recovery ENWW - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 137
Universal Serial Bus Pin Signal 1 +5 VDC 2 Data - 3 Data + 4 Ground ENWW Universal Serial Bus 127 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 138
128 Chapter 8 Connector pin assignments ENWW - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 141
Disposal. This HP product contains mercury Web site at http://www.eiae.org. This section provides disassembly instructions 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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- - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 147
±R/RW SuperMulti DL Drive specifications 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 148
15 fn 15 function 15 navigation 15 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 13 M Main menu 100 mass storage - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 149
serviceability 9 wireless 7 product name 1 R recovering a program or driver 115 recovering from the dedicated recovery partition 120 recovering from the recovery discs 120 recovery discs 115, 116 Recovery Manager 115, 120 recovery partition 115 recovery, system 120 removal/replacement preliminaries - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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 - HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - Page 151
- HP Presario CQ42-400 | Compaq Presario CQ42 Notebook PC and HP G42 Notebook PC - - 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.