HP ProSignia 320 Desktop PC 6466C Compaq Deskpro Family of Personal Computers, - Page 7

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General Service Information

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The screws used in the computer are of different thread sizes and lengths; using the wrong

screw in an application may damage the unit.

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All data stored on a hard drive is lost when the drive is formatted.

Clearing CMOS

✎

This procedure does not apply to portable computers.

1.

Turn off the computer and any peripheral devices that are connected to it.

2.

Disconnect the power cord from the electrical outlet and then from the computer.

CAUTION:

The cooling fan is off only when the computer is turned off and the power cable has been

disconnected. The cooling fan is always on in all other instances, such as when the computer is ±On,² in

±Standby,² or ±Suspend² mode.

CAUTION:

When the computer is connected to 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.

3. Remove the computer cover.

4.

Reset the computer by one of the following methods depending on the model.

T±

If the system board has a CMOS reset button, press the button and then release it to

reset the CMOS.

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If the system board uses jumpers, remove the E50 jumper from pins 1 and 2 for

60 seconds; then replace the jumper.

Customer Responsibilities

Check the service contract and verify that the customer has taken care of these items:

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Installing the operating system.

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Providing and running all virus check programs.

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Running Diagnostics on the hard drive.

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Reloading the operating system as required.

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Copying over the operating system files as required.

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Reformatting the hard drive as required.

Section	Page
Quick Troubleshooting Guide	1
Notice	2
Table of Contents	4
chapter 1 - General Service Information	6
Troubleshooting Procedures	6
Tools Required - Desktop Computers and Workstations	6
Tools Required - Notebooks	6
Protecting Yourself and the Computer	6
Clearing CMOS	7
Customer Responsibilities	7
POST Power-On Sequence	8
Compaq Drive Protection System	8
Accessing DPS Through Compaq Diagnostics for Windows	9
Compaq Configuration Record Utility	9
chapter 2 - Troubleshooting Flowcharts for Desktop Computers	10
1. Initial Troubleshooting	11
2. No Power, Part 1	12
3. No Power, Part 2	13
4. No Power, Part 3	14
5. No Video, Part 1	15
6. No Video, Part 2	16
7. No Video, Part 3	17
8. Error Messages, Part 1	18
9. Error Messages, Part 2	19
10. Error Messages, Part 3	20
11. No O/S Loading	21
12. No O/S Loading from Hard Drive, Part 1	22
13. No O/S Loading from Hard Drive, Part 2	23
14. No O/S Loading from Hard Drive, Part 3	24
15. No O/S Loading from Diskette Drive	25
16. No O/S Loading from CD-ROM Drive	26
17. No O/S Loading from Network	27
18. Non-Functioning Device	28
chapter 3 - Troubleshooting Flowcharts for Portable Computers	29
1. Initial Troubleshooting	30
2. No Power, Part 1	31
3. No Power, Part 2	32
4. No Power, Part 3	33
5. No Power, Part 4	34
6. No Video, Part 1	35
7. No Video, Part 2	36
8. Non-Functioning Docking Station	37
9. No O/S Loading	38
10. No O/S Loading from Hard Drive, Part 1	39
11. No O/S Loading from Hard Drive, Part 2	40
12. No O/S Loading from Hard Drive, Part 3	41
13. No O/S Loading from Diskette Drive	42
14. No O/S Loading from CD-ROM or DVD-ROM Drive	43
15. No Audio, Part 1	44
16. No Audio, Part 2	45
17. Non-Functioning Device	46
18. Non-Functioning Pointing Device or Keyboard	47
19. No Network or Modem Connection	48
appendix A - Further Troubleshooting	49
appendix B - POST Error Messages - Numbered	62

HP ProSignia 320 Desktop PC 6466C Compaq Deskpro Family of Personal Computers, - Page 7

Clearing CMOS, Customer Responsibilities

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