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Appendix A: BIOS POST Error Codes
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 the boot-up process. The error messages normally appear on the screen.
Fatal errors are those which will not allow the system to proceed with the
boot-up procedure. 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.
BIOS Error Beep Codes
Beep Code 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
1 continuous beep w/
Front Panel OH LED on
System Overheat 1 continuous beep with the
front panel OH LED on
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