Compaq DC7600 Troubleshooting Guide
Compaq DC7600 - HP Manual
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- Compaq DC7600 | Troubleshooting Guide - Page 1
Troubleshooting Guide Business PCs Document Part Number: 384569-001 May 2005 This guide provides helpful hints and solutions for troubleshooting the above products as well as scenarios for possible hardware and software problems. - Compaq DC7600 | Troubleshooting Guide - Page 2
© Copyright 2005 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice. Microsoft, MS-DOS, and Windows are trademarks of Microsoft Corporation in the U.S. and other countries. The only warranties for HP products and services are set forth in - Compaq DC7600 | Troubleshooting Guide - Page 3
Restoring the Software 1-8 2 Troubleshooting Without Diagnostics Safety and Comfort 2-1 Before You Call for Technical Support 2-2 Helpful Hints 2-4 Solving General Problems 2-6 Solving Power Supply Problems 2-10 Solving Diskette Problems 2-12 Solving Hard Drive Problems 2-15 Solving MultiBay - Compaq DC7600 | Troubleshooting Guide - Page 4
12 B Password Security and Resetting CMOS Resetting the Password Jumper B-2 Clearing and Resetting the CMOS B-3 Using the CMOS Button B-3 Using Computer Setup to Reset CMOS B-5 C Drive Protection System (DPS) Accessing DPS Through Computer Setup C-2 Index iv www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 5
on a diskette or USB HP Drive Key. Use HP Insight Diagnostics to determine if all the devices installed on the computer are recognized by the system and call to the Customer Support Center. ✎ Third party devices may not be detected by HP Insight Diagnostics. Troubleshooting Guide www.hp.com 1-1 - Compaq DC7600 | Troubleshooting Guide - Page 6
not boot to the CD in the optical drive, you may need to change the boot order in the Computer Setup (F10) utility so that the system attempts to boot to the optical drive before booting to the hard drive. Refer to the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD for - Compaq DC7600 | Troubleshooting Guide - Page 7
information about storage media connected to the computer. This list includes all fixed disks, diskette drives, and optical drives. System-Shows information about the system board, processor, chassis, and BIOS, plus internal speaker and PCI bus information. Troubleshooting Guide www.hp.com 1-3 - Compaq DC7600 | Troubleshooting Guide - Page 8
Computer Diagnostic Features Test Tab most flexibility in controlling the testing of a system. The Custom Test mode allows you to specifically select which devices, tests, and test parameters are run. To begin testing: 1. Select the from the drop-down list. 1-4 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 9
Status Tab Computer Diagnostic Features 5. Choose how you want the test to be executed, either Number of Loops or Total Test Time. ■ The tests that are running ■ The overall elapsed time ■ The individual elapsed test times ■ The condition status of each test Troubleshooting Guide www.hp.com 1-5 - Compaq DC7600 | Troubleshooting Guide - Page 10
code and recommended actions for each code. To find an error code description quickly, enter the code in the box at the top of the window and click the Find Error Codes button. The Test Components view displays low-level information on tests that are run. 1-6 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 11
the Support & Drivers link. 3. Click the Download driver and software radio button. 4. Enter your product number (for example, dc7600) in the text box and press the Enter key. 5. Select your OS. 6. Click the Diagnostic link. 7. Locate HP Insight Diagnostics and click Download. Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 12
Windows operating system and software can be restored to the original state that they were when you purchased the computer by using the Restore Plus! CD. See the documentation included with the Restore Plus! CD for complete instructions on using this feature. 1-8 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 13
, hard drive, optical drive, graphics, audio, memory, and software problems. If you encounter problems with the computer, refer to the tables in this chapter for probable causes and recommended solutions. ✎ For information on specific error messages that may appear on the screen during Power-On Self - Compaq DC7600 | Troubleshooting Guide - Page 14
." ■ Refer to the comprehensive online technical support at www.hp.com/support. ■ Refer to the following "Helpful Hints" section in this guide. ■ Run the Restore Plus! CD. Ä CAUTION: Running the Restore Plus! CD will erase all data on the hard drive. 2-2 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 15
software that was recently installed. ■ Run the Restore Plus! CD. Ä CAUTION: Running the Restore Plus! CD will erase all data on the hard drive. ✎ For sales information and warranty upgrades (Care Packs), call your local authorized service provider or dealer. Troubleshooting Guide www.hp.com 2-3 - Compaq DC7600 | Troubleshooting Guide - Page 16
loss is set in Computer Setup. If it does not restart, press the power button to start the computer. ■ Reconfigure the computer after installing a non-plug and play expansion board or other option. See "Solving Hardware Installation Problems" for instructions. 2-4 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 17
VGA source in Computer Setup. Ä CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage. Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 18
and time under Control Panel (Computer Setup can also be used to update the RTC date and time). If the problem persists, replace the RTC battery. See the Hardware Reference Guide on the Documentation and Diagnostics CD for instructions on installing a new battery, or contact an authorized dealer - Compaq DC7600 | Troubleshooting Guide - Page 19
installed properly. Transfer data from the hard drive to create more space on the hard drive. Add more memory. Defragment hard drive. Restart the computer. Run virus protection program. 1. Close unnecessary applications to free up memory. 2. Add more memory. Troubleshooting Guide www.hp.com 2-7 - Compaq DC7600 | Troubleshooting Guide - Page 20
more memory. 3. Upgrade the graphics solution. Restart the computer. 1. Ensure that the computer air vents are not blocked and the processor cooling fan is running. 2. Open hood, press power button, and see if the processor fan spins. If the processor fan is not spinning, make sure the fan's cable - Compaq DC7600 | Troubleshooting Guide - Page 21
Troubleshooting Without Diagnostics Solving General Problems (Continued) Problem Cause System does not power on and the LEDs on the front of the computer are not flashing. System unable to power on. Solution Press and hold the power button for less than 4 seconds. If the hard drive LED turns - Compaq DC7600 | Troubleshooting Guide - Page 22
Troubleshooting Without Diagnostics Solving Power Supply Problems Common causes and solutions for power supply problems are listed in the following table. Solving Power Supply Problems Problem Cause Power supply shuts down intermittently. Voltage selector switch on rear of computer chassis ( - Compaq DC7600 | Troubleshooting Guide - Page 23
Open the hood and ensure the 4- or 6-wire power supply cable is seated into the connector on the system board. 3. Check if a device is causing the problem by removing ALL attached devices (such as hard, diskette, or optical drives, and expansion cards). Power on the system. If the system enters the - Compaq DC7600 | Troubleshooting Guide - Page 24
the computer when you add or remove hardware, such as an additional diskette drive. See "Solving Hardware Installation Problems" for instructions. Solving Diskette Problems Problem Cause Diskette drive light stays on. Diskette is damaged. Diskette is incorrectly inserted. Drive cable is - Compaq DC7600 | Troubleshooting Guide - Page 25
Troubleshooting Without Diagnostics Solving Diskette Problems (Continued) Problem Cause Diskette drive cannot write Writing to the wrong to a diskette. (continued) drive. Not enough space is left on the diskette. Cannot format diskette. Legacy diskette writes are disabled in Computer Setup. - Compaq DC7600 | Troubleshooting Guide - Page 26
Boot function in Computer Setup overrides the Boot Order enable command. Run Computer Setup and disable Network Server Mode in Security > Password Options. Run Computer Setup and enable Removable Media Boot in Storage > Storage Options > Removable Media Boot. 2-14 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 27
a driver problem. If it is not listed, the probable cause is a hardware problem. If this is a newly installed drive, enter Computer Setup and try adding a POST delay under Advanced > Power-On. Run Computer Setup and enable all the SATA controllers in Storage > Storage Options. Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 28
. If FAT32 formatting, the hard drive cannot be accessed. Run Computer Setup and enable the hard drive entry in the Storage > Boot Order list. If attempting to boot from a hard drive, ensure it is attached to the system board connector labeled P60 SATA 0. 2-16 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 29
to turn off the power. To restart the computer, press the power button again. Solving MultiBay Problems Solving MultiBay Problems Problem Cause Drive not found. You attempted to hot plug a removable hard drive that has DriveLock security enabled. (This feature supported on some models only - Compaq DC7600 | Troubleshooting Guide - Page 30
mode. Press the power button to resume from standby mode. Ä CAUTION: When attempting to resume from standby mode, do not hold down the power button for more than four seconds. Otherwise, the computer will shut down and you will lose any unsaved data. 2-18 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 31
Troubleshooting Without Diagnostics Solving Display Problems (Continued) Problem Cause Blank screen (no video). (continued) Monitor cable is plugged into the wrong connector. Monitor settings in the computer are not compatible with the monitor. Blank screen and the power LED flashes Red five - Compaq DC7600 | Troubleshooting Guide - Page 32
. Adjust the monitor brightness and contrast controls. Check that the graphics cable is securely connected to the graphics card and the monitor. Install the video drivers included in the upgrade kit. Change requested resolution. Replace the graphics card. 2-20 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 33
the video cable. Restart the computer and enter Safe Mode. Change the settings to a supported setting then restart the computer so that the new settings take effect. None. It is normal for the degaussing coil to be activated when the monitor is powered on. Troubleshooting Guide www.hp.com 2-21 - Compaq DC7600 | Troubleshooting Guide - Page 34
the graphics card. 2. Replace the graphics card. Use the Character Map to locate the and select the appropriate symbol. Click Start > All Programs > Accessories > System Tools > Character Map. You can copy the symbol from the Character Map into a document. 2-22 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 35
Troubleshooting Without Diagnostics Solving Audio Problems If the computer has audio features and you encounter audio problems, see the common causes and solutions listed in the following table. Solving Audio Problems Problem Cause Sound cuts in and out. Processor resources are being used by - Compaq DC7600 | Troubleshooting Guide - Page 36
mode. Press the power button to resume from standby mode. Ä CAUTION: When attempting to resume from standby mode, do not hold down the power button for more than four seconds. Otherwise, the computer will shut down and you will lose any unsaved data. 2-24 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 37
audio. The hard disk may be full. Solution Plug the headphones into the headphone connector on the front of the computer. Before recording, make sure there is enough free space on the hard disk. You can also try recording the audio file in a compressed format. Troubleshooting Guide www.hp - Compaq DC7600 | Troubleshooting Guide - Page 38
the power cord and electrical outlet. Install the correct printer driver for the application. Reconnect all cables. Reset the printer by turning it off for one minute, then turn it back on. Check the paper tray and refill it if it is empty. Select online. 2-26 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 39
mode. Press the power button to resume from standby mode. Ä CAUTION: When attempting to resume from standby mode, do not hold down the power button for more than four seconds. Otherwise, the computer will shut down and you will lose any unsaved data. Troubleshooting Guide www.hp.com 2-27 - Compaq DC7600 | Troubleshooting Guide - Page 40
back of the computer (or the keyboard) and restart. Shut down the computer using the keyboard then restart the computer. Remove the roller ball cover on the mouse and clean the internal components. See the Worldwide Limited Warranty for terms and conditions. 2-28 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 41
. Mouse roller ball is dirty. Remove roller ball cover from the bottom of the mouse and clean it with a mouse cleaning kit available from most computer stores. Troubleshooting Guide www.hp.com 2-29 - Compaq DC7600 | Troubleshooting Guide - Page 42
Troubleshooting Without Diagnostics Solving Hardware Installation Problems You may need to reconfigure the computer when you add or remove hardware, such as an additional drive or expansion card. If you install a plug and play device, Windows XP automatically recognize the device and configure the - Compaq DC7600 | Troubleshooting Guide - Page 43
Troubleshooting Without Diagnostics Solving Hardware Installation Problems (Continued) Problem Cause Solution Computer will not start. Wrong memory modules were used in the upgrade or memory modules were installed in the wrong location. 1. Review the documentation that came with the system to - Compaq DC7600 | Troubleshooting Guide - Page 44
Troubleshooting Without Diagnostics Solving Hardware Installation Problems (Continued) Problem Cause Solution Power LED flashes Red ten times, once every second, followed by a two second pause, and the computer beeps ten times. (Beeps stop after fifth iteration but LEDs continue flashing.) Bad - Compaq DC7600 | Troubleshooting Guide - Page 45
. 1. Run Computer Setup and enable network controller. 2. Enable the network controller in the operating system via Device Manager. Check the network controller documentation for the correct driver or obtain the latest driver from the manufacturer's Web site. Troubleshooting Guide www.hp.com 2-33 - Compaq DC7600 | Troubleshooting Guide - Page 46
load and the Network Connections applet within Windows for link status. 1. Run Computer Setup and enable network controller. 2. Enable the network controller in the operating system via Device Manager. Reinstall network drivers. See the Network & Internet Communications Guide on the Documentation - Compaq DC7600 | Troubleshooting Guide - Page 47
menu, change the resource settings for the board. Reinstall the network drivers, using the Restore Plus! CD. Ensure that the cable is securely attached to the network connector and that the other end of the cable is securely attached to the correct device. Troubleshooting Guide www.hp.com 2-35 - Compaq DC7600 | Troubleshooting Guide - Page 48
-standard NIC, or change the boot sequence to boot from another source. Verify Network Connectivity, that a DHCP Server is present, and that the Remote System Installation Server contains the NIC drivers for your NIC. Contact an authorized service provider. 2-36 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 49
Troubleshooting Without Diagnostics Solving Memory Problems If you encounter memory problems, some common causes and solutions are listed in the following table. Ä CAUTION: For those systems that support ECC memory, HP does not support mixing ECC and non-ECC memory. Otherwise, the computer will not - Compaq DC7600 | Troubleshooting Guide - Page 50
Troubleshooting Without Diagnostics Solving Memory Problems (Continued) Problem Cause Power LED flashes Red five times, once every second, followed by a two second pause, and the computer beeps five times. (Beeps stop after fifth iteration but LEDs continue flashing.) Memory is installed - Compaq DC7600 | Troubleshooting Guide - Page 51
and DVD Problems Problem Cause System will not boot from CD-ROM or DVD drive. Removable Media Boot is disabled in the Computer Setup utility. Network Server Mode is enabled in Computer Setup. Non-bootable CD in drive. Boot order not correct. CD-ROM or DVD devices are not detected or driver is - Compaq DC7600 | Troubleshooting Guide - Page 52
cleaning kit, available from most computer stores. Windows does not detect the CD-ROM or DVD-ROM drive. 1. Use Device Manager to remove or uninstall the device in question. 2. Restart the computer and let Windows detect the CD or DVD driver. Recording audio CDs is difficult or impossible. Wrong - Compaq DC7600 | Troubleshooting Guide - Page 53
front of the computer and restart the computer. If the USB device requires AC power, be sure one end is connected to the device and one end is connected to a live outlet. 1. Install the correct driver for the device. 2. You might need to reboot the computer. Troubleshooting Guide www.hp.com 2-41 - Compaq DC7600 | Troubleshooting Guide - Page 54
modem. You should see a "power" LED light on the front of the cable/DSL modem. Try connecting to the Internet at a later time or contact your ISP. (If the cable/DSL service is connected, the "cable" LED light on the front of the cable/DSL modem will be on.) 2-42 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 55
Troubleshooting Without Diagnostics Solving Internet Access Problems (Continued) Problem Cause Solution Unable to connect to the Internet. (continued) The CAT5 UTP cable is disconnected. Connect the CAT5 UTP cable between the cable modem and the computers's RJ-45 connector. (If the connection - Compaq DC7600 | Troubleshooting Guide - Page 56
, then click Properties. 7. Under Device status, verify that the modem is working properly. 8. Under Device usage, verify the modem is enabled. 9. If there are further problems, click the Troubleshoot button and follow the on-screen instructions. 2-44 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 57
. Use recovery diskette to scan hard drive for errors. Verify that the software is certified by Microsoft for your version of Windows (see program packaging for this information). If possible, save all data, close all programs, and restart the computer. Troubleshooting Guide www.hp.com 2-45 - Compaq DC7600 | Troubleshooting Guide - Page 58
, or service provider for service, remember to provide the setup and power-on passwords if they are set. ✎ Refer to the number listed in the warranty or in the Support Telephone Numbers guide on the Documentation and Diagnostics CD for technical assistance. 2-46 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 59
A POST Error Messages This appendix lists the error codes, error messages, and the various indicator light and audible sequences that you may encounter during Power-On Self-Test (POST) or computer restart, the probable source of the problem, and steps you can take to resolve the error condition. - Compaq DC7600 | Troubleshooting Guide - Page 60
and Resetting CMOS.") 5. If the message disappears, there may be a problem with the expansion card. 6. Replace the system board. 1. Clear CMOS. (See Appendix B, "Password Security and Resetting CMOS.") 2. Remove expansion boards. 3. Replace the system board. A-2 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 61
(Computer Setup can also be used). If the problem persists, replace the RTC battery. See the Hardware Reference Guide on the Documentation and Diagnostics CD for instructions on installing a new battery, or contact an authorized dealer or reseller for RTC battery replacement. Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 62
Setup or Windows utilities. 2. Make sure the memory module(s) are installed properly. 3. If third-party memory has been added, test using HP-only memory. 4. Verify proper memory module type. 201-Memory Error RAM failure. 1. Run Computer Setup or Windows utilities. 2. Ensure memory modules are - Compaq DC7600 | Troubleshooting Guide - Page 63
(See Appendix B, "Password Security and Resetting CMOS.") 3. Reconfigure card resources and/or run Computer Setup. 410-Audio Interrupt IRQ address conflicts Conflict with another device. Enter Computer Setup and reset the IRQ in Advanced > Onboard Devices. Troubleshooting Guide www.hp.com A-5 - Compaq DC7600 | Troubleshooting Guide - Page 64
2. Reseat fan cable. 3. Replace chassis, rear chassis, or front chassis fan. 514-CPU or Chassis Fan not Detected CPU or chassis fan is not connected or may have malfunctioned. 1. Reseat CPU or chassis fan. 2. Reseat fan cable. 3. Replace CPU or chassis fan. A-6 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 65
Been Removed Since Last System Startup Computer cover was removed since last system startup. No action required. 917-Front Audio Not Connected Front audio harness has been detached or unseated from motherboard. Reconnect or replace front audio harness. Troubleshooting Guide www.hp.com A-7 - Compaq DC7600 | Troubleshooting Guide - Page 66
Both external and internal serial ports are assigned to COM2. 1. Remove any serial port expansion cards. 2. Clear CMOS. (See Appendix B, "Password Security and Resetting CMOS.") 3. Reconfigure card resources and/or run Computer Setup or Windows utilities. A-8 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 67
.) 1. Determine if hard drive is giving correct error message. Enter Computer Setup and run the Drive Protection System test under Storage > DPS Self-test. 2. Apply hard drive firmware patch if applicable. (Available at www.hp.com/support.) 3. Back up contents and replace hard drive. 1785-MultiBay - Compaq DC7600 | Troubleshooting Guide - Page 68
Setup. If Setup already has data in the field or will not allow the serial number to be entered, download from www.hp.com and run SP5572.EXE (SNZERO.EXE). 2. Run Computer Setup and try to enter serial number under Security, System ID, then save changes. A-10 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 69
2 Parity RAM failure. Run Computer Setup and Diagnostic utilities. System will not boot without fan CPU fan not installed or disconnected in VSFF chassis. 1. Open hood, press the Power button, and see if the processor fan spins. If the processor fan is not spinning, make sure the fan's cable is - Compaq DC7600 | Troubleshooting Guide - Page 70
Action Green Power LED On. None Computer on. None Green Power LED flashes every two seconds. None Computer in Suspend to RAM mode (some models only) or normal Suspend mode. None required. Press any key or move the mouse to wake the computer. A-12 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 71
second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Processor not installed (not an indicator of bad processor). 1. Check to see that the processor is present. 2. Reseat the processor. Troubleshooting Guide www.hp.com A-13 - Compaq DC7600 | Troubleshooting Guide - Page 72
Open the hood and ensure the 4 or 6-wire power supply cable is seated into the connector on the system board. 2. Check if a device is causing the problem by removing ALL attached devices (such as hard, diskette, or optical drives, and expansion cards). Power on the system. If the system enters the - Compaq DC7600 | Troubleshooting Guide - Page 73
Audible Codes (Continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes six times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. 6 Pre-video graphics For systems with a graphics card: error - Compaq DC7600 | Troubleshooting Guide - Page 74
10 Bad option card. 1. Check each option card by removing the card (one at a time if multiple cards), then power on the system to see if fault goes away. 2. Once a bad card is identified, remove and replace the bad option card. 3. Replace the system board. A-16 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 75
for less than 4 seconds. If the hard drive LED does not turn on green then: 1. Check that the unit is plugged into a working AC outlet. 2. Open hood and check that the power button harness is properly connected to the system board. 3. Check that both power supply cables are properly connected to the - Compaq DC7600 | Troubleshooting Guide - Page 76
up the computer CMOS settings before resetting them in case they are needed later. Back up is easily done through Computer Setup. See the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD for information on backing up the CMOS settings. Troubleshooting Guide www.hp.com - Compaq DC7600 | Troubleshooting Guide - Page 77
. The IPM can be downloaded from www.hp.com/support. 5. Remove the jumper from pins 1 and 2. Place the jumper on either pin 1 or 2, but not both, so that it does not get lost. 6. Replace the computer cover or access panel. 7. Reconnect the external equipment. B-2 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 78
6 through 8. Establish the new passwords in Computer Setup. Refer to the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD for Computer Setup instructions. Clearing and Resetting the CMOS The computer's configuration memory (CMOS) stores password information and information - Compaq DC7600 | Troubleshooting Guide - Page 79
button will not clear CMOS if the power cord is connected. CMOS button ✎ For assistance locating the CMOS button and other system board components, see the Illustrated Parts Map (IPM) for that particular system. 5. Replace the computer cover or access panel. B-4 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 80
rediscovery. See the Desktop Management Guide on the Documentation and Diagnostics CD for further instructions on reestablishing passwords. For instructions on Computer Setup, see the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD. Troubleshooting Guide www.hp.com B-5 - Compaq DC7600 | Troubleshooting Guide - Page 81
DPS when you suspect a hard drive problem. If the computer reports a SMART Hard Drive Detect Imminent Failure message, there is no need to run DPS; instead, back up the information on the hard drive and contact a service provider for a replacement hard drive. Troubleshooting Guide www.hp.com C-1 - Compaq DC7600 | Troubleshooting Guide - Page 82
0. ■ Test Aborted. Completion Code 1 or 2. ■ Test Failed. Drive Replacement Recommended. Completion Code 3 through 14. If the test failed, the completion code should be recorded and reported to your service provider for help in diagnosing the computer problem. C-2 www.hp.com Troubleshooting Guide - Compaq DC7600 | Troubleshooting Guide - Page 83
access problems 2-42 K keyboard error code A-5 solving problems 2-27 testing 2-4 L LEDs blinking power A-12 blinking PS/2 keyboard A-12 M memory error codes A-4 solving problems 2-37 monitor blank screen 2-18 blurry video 2-20 checking connections 2-5 Troubleshooting Guide www.hp.com Index - Compaq DC7600 | Troubleshooting Guide - Page 84
A-9 N network problems 2-33 numeric codes A-2 O optical drive problems 2-39 P password clearing B-1 features B-1 power-on B-1 resetting jumper B-2 setup B-1 POST enabling error messages A-1 error messages A-1 power supply problems 2-10 power-on password B-1 printer problems 2-26 problems audio 2-23
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Troubleshooting Guide
Business PCs
Document Part Number: 384569-001
May 2005
This guide provides helpful hints and solutions for troubleshooting
the above products as well as scenarios for possible hardware and
software problems.