Troubleshooting Guide
A–2 www.hp.com Troubleshooting Guide
POST Error Messages
POST Numeric Codes and Text Messages
This section covers those POST errors that have numeric codes 
associated with them. The section also includes some text messages 
that may be encountered during POST.
✎
The computer will beep once after a POST text message is displayed 
on the screen.
Numeric Codes and Text Messages 
Code/Message Probable Cause Recommended Action
101-Option ROM 
Checksum Error
System ROM or 
expansion board option 
ROM checksum.
1. Verify the correct ROM.
2. Flash the ROM if needed.
3. If an expansion board was recently 
added, remove it to see if the problem 
remains.
4. Clear CMOS. (See Appendix B, 
“Password Security and Resetting 
CMOS.”)
5. If the message disappears, there may 
be a problem with the expansion 
card.
6. Replace the system board.
103-System Board 
Failure
DMA or timers. 1. Clear CMOS. (See Appendix B, 
“Password Security and Resetting 
CMOS.”)
2. Remove expansion boards.
3. Replace the system board.










