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Appendix A: BIOS POST Error Codes
Appendix A
BIOS POST Error 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 the
boot-up process. The error messages normally appear on the screen.
Fatal errors will not allow the system to continue the boot-up procedure. If a
fatal error occurs, you should consult with your system manufacturer for possible
repairs.
BIOS POST Error 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
1 long beep + 8 short
beeps
Display memory
read/write error or
no video
No video display, video
adapter missing or with faulty
memory
Continuous high (pitch)
+ low (pitch)
System Overheat System overheat
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