HP Compaq dc5750 MT Troubleshooting Manual page 58

Table A-1 Numeric Codes and Text Messages (continued)
Control panel message
301-Keyboard Error
303-Keyboard Controller Error
304-Keyboard or System Unit Error
404-Parallel Port Address Conflict Detected
410-Audio Interrupt Conflict
411-Network Interface Card Interrupt Conflict IRQ address conflicts with another device.
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
52 Appendix A POST Error Messages
Description
Keyboard failure.
I/O board keyboard controller.
Keyboard failure.
Both external and internal ports are assigned
to parallel port X.
IRQ address conflicts with another device.
Graphics display controller.
Flash Screen image has errors.
malfunctioned.
Recommended action
1. Reconnect keyboard with computer
turned off.
2. Check connector for bent or missing
pins.
3. Ensure that none of the keys are
depressed.
4. Replace keyboard.
1. Reconnect keyboard with computer
turned off.
2. Replace the system board.
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. Remove any parallel port expansion
cards.
2. Clear CMOS. (See Appendix B,
Password Security and Resetting
CMOS.)
3. Reconfigure card resources and/or run
Computer Setup.
Enter Computer Setup and reset the IRQ in
Advanced > Onboard Devices.
Enter Computer Setup and reset the IRQ in
Advanced > Onboard Devices.
1. Reseat the graphics card (if applicable).
2. Clear CMOS. (See Appendix B,
Password Security and Resetting
CMOS.)
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.
ENWW