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HP ProSignia 320 Desktop PC 6433C Compaq Deskpro Family of Personal Computers, - Page 13

No Power, Part 2

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3. No Power, Part 2 Continued from Page 2-3, No Power, Part 1 Caution: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power cord from the power source or the unit before beginning disassembly procedures. Power supply N connected to system board? Plug power connector into system board. Replace power supply. Y System Y board have 5V Aux LED? Plug in power cord. N 1. Press power button on. 2. Check for fan rotation. 3. Press power button off. N 5V Aux LED on? Y Replace power supply. N N 1. Unplug power to all drives. Does fan spin? 2. Remove all installed cards. 3. Press power button on. Does fan spin? Y Y 1. Add drives back one-ata-time to find faulty drive. 2. Add cards back one-ata-time to find faulty card. Go to Page 2-5, No Power, Part 3 N Power on? Y Done 2-4 Troubleshooting Flowcharts for Desktop Computers

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