User Manual

A-1
Appendix A: BIOS POST Error Codes
Appendix A
BIOS 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.
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
corresponding error.
A-1 BIOS Error Beep Codes
BIOS Error Beep Codes
Beep Code/LED Error Message Description
1 beep Refresh Ready to boot
5 short beeps + 1 long beep Memory error No memory detected in the system
5 beeps No Con-In or no Con-
Out devices
Con-In includes USB or PS/2
keyboard, PCI or Serial Console
Redirection.
Con-Out includes Video Controller, PCI
or Serial Console Redirection.