Appendix A: POST Error Beep Codes
A-1
Appendix A
BIOS Error Beep Codes
During the POST (Power-On Self-Test) routines, which are performed each time
the system is powered on, errors may occur.
Non-fatal errors are those which, in most cases, allow the system to continue
with bootup. The error messages normally appear on the screen.
Fatal errors will not allow the system to continue to bootup. If a fatal error oc-
curs, you should consult with your system manufacturer for possible repairs.
These fatal errors are usually communicated through a series of audible beeps.
The numbers on the fatal error list correspond to the number of beeps for the
corresponding error.
A-1 BIOS Error Beep Codes
BIOS Error Beep Codes
Beep Code/LED Error Message Description
1 beep Refresh Circuits have been reset.
(Ready to power up)
5 short beeps + 1 long
beep
Memory error No memory detected in the
system
8 beeps Display memory
read/write error
Video adapter missing or with
faulty memory
OH LED On System OH System Overheat
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