HP dc7900 - Convertible Minitower PC Troubleshooting Manual page 59

Table A-1 Numeric Codes and Text Messages (continued)
Control panel message
304-Keyboard or System Unit Error
501-Display Adapter Failure
510-Flash Screen Image Corrupted
511-CPU, CPUA, or CPUB Fan not Detected CPU fan is not connected or may have
512-Chassis, Rear Chassis, or Front Chassis
Fan not Detected
514-CPU or Chassis Fan not Detected
601-Diskette Controller Error
605-Diskette Drive Type Error
660-Display cache is detected unreliable
ENWW
Description
Keyboard failure.
Graphics display controller.
Flash Screen image has errors.
malfunctioned.
Chassis, rear chassis, or front chassis fan is
not connected or may have malfunctioned.
CPU or chassis fan is not connected or may
have malfunctioned.
Diskette controller circuitry or floppy drive
circuitry incorrect.
Mismatch in drive type.
Integrated graphics controller display cache
is not working properly and will be disabled.
Recommended action
1. Reconnect the keyboard with computer
turned off.
2. Ensure that none of the keys are
depressed.
3. Replace the keyboard.
4. Replace the system board.
1. Reseat the graphics card (if applicable).
2. Clear CMOS. (See Appendix B,
Password Security and Resetting
CMOS on page
3. Verify monitor is attached and turned
on.
4. Replace the graphics card (if possible).
Reflash the system ROM with the latest BIOS
image.
1. Reseat CPU fan.
2. Reseat fan cable.
3. Replace CPU fan.
1. Reseat chassis, rear chassis, or front
chassis fan.
2. Reseat fan cable.
3. Replace chassis, rear chassis, or front
chassis fan.
1. Reseat CPU or chassis fan.
2. Reseat fan cable.
3. Replace CPU or chassis fan.
1. Check and/or replace cables.
2. Clear CMOS. (See Appendix B,
Password Security and Resetting
CMOS on page
3. Replace diskette drive.
4. Replace the system board.
1. Disconnect any other diskette controller
devices (tape drives).
2. Clear CMOS. (See Appendix B,
Password Security and Resetting
CMOS on page
Replace system board if minimal graphics
degrading is an issue.
POST Numeric Codes and Text Messages
61.)
61.)
61.)
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