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BIOS POST Error Beep Codes
During the POST (Power-On Self-Test) routines, which are performed at each
system boot, errors may occur.
Non-fatal errors are those which, in most cases, allow the system to continue to
boot. The error messages normally appear on the screen.
Fatal errors will not allow the system to continue with bootup procedure. If a fatal
error occurs, you should consult with your system manufacturer for possible repairs.
The fatal errors are usually communicated through repeated patterns of audible
beeps. Each pattern of audible beeps listed below corresponds to its respective
error.
BIOS Error Beep Codes
Beep Code/LED
1 beep
5 short beeps + 1 long beep
5 beeps
1 beep per device
1 Continuous Beep
Appendix A: BIOS POST Error Codes
Appendix A
BIOS POST Error Beep Codes
Error Message
Refresh
Memory error
No Con-In or No Con-
Out devices
Refresh
X10DP Motherboard IPMI Error Codes
System OH
A-1
Description
Ready to boot
No memory detected in the system
Con-In includes USB or PS/2 key-
board, PCI or Serial Console Redirec-
tion, IPMI KVM or SOL.
Con-Out includes Video Controller,
PCI or Serial Console Redirection,
IPMI SOL.
1 beep or each USB device detected
System Overheat
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