HP EliteOne 800 G1 Maintenance & Service Manual page 192

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
512-Chassis, Rear Chassis, or Front Chassis
Fan not Detected
513-Front Chassis fan not detected
514-CPU or Chassis Fan not Detected
515-Power Supply fan not detected
660-Display cache is detected unreliable
912-Computer Cover Has Been Removed
Since Last System Startup
182 Chapter 10 POST error messages
Description
Keyboard failure.
Graphics display controller.
Flash Screen image has errors.
CPU fan is not connected or may have
malfunctioned.
Chassis, rear chassis, or front chassis fan is
not connected or may have malfunctioned.
Front chassis fan is not connected or may
have malfunctioned.
CPU or chassis fan is not connected or may
have malfunctioned.
Power supply fan is not connected or may
have malfunctioned.
Integrated graphics controller display cache
is not working properly and will be disabled.
Computer cover was removed since last
system startup.
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 191.)
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 front chassis fan.
2. Reseat fan cable.
3. Replace front chassis fan.
1. Reseat CPU or chassis fan.
2. Reseat fan cable.
3.
Replace CPU or chassis fan.
1.
Reseat power supply fan.
2. Reseat fan cable.
3.
Replace power supply fan.
Replace system board if minimal graphics
degrading is an issue.
No action required.