Appendix A: POST Error Beep Codes
A-1
Appendix A
POST 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 occurs,
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 cor-
responding error.
POST 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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