Appendix A: BIOS Error Codes
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Appendix A
BIOS Error Codes
A-1 BIOS Error Beep (POST) 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
are those which 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.
These fatal errors are usually communicated through a series of audible beeps. The numbers
on the fatal error list (on the following page) correspond to the number of beeps for the
corresponding error. All errors listed, with the exception of Beep Code 8, are fatal errors.
BIOS Beep (POST) Codes
Beep Code
Error Message
Description
1 beep
Refresh
Ready to boot
5 short, 1 long
Memory error
No memory detected in system
5 beeps
No con-in or con-out devices
Con-in includes USB or PS/2 keyboard, PCI or serial
console redirection, and IPMI KVM or SOL.
Con-out includes the video controller, PCI or serial
console redirection, and IPMI SOL
1 beep per device
Refresh
1 beep for each USB device detected
IPMI Error Codes
Beep Code
Error Message
Description
1 long continuous
System OH
System overheat condition
