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 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 pro-
cedure. 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.
Appendix A: BIOS Error Beep Codes
A-1
BIOS Error Beep Codes
Beep Code Error Message Description
1 beep Refresh Circuits have been reset.
(Ready to power up)
Repetition of the pat-
tern of (1 long beep+ a
short pause)
Memory error No memory detected in the
system
1 long beep + 2 short
beeps
Display memory
read/write error
Video adapter missing or with
faulty memory
1 continuous beep
(with the front panel
OH LED on)
System Overheat 1 continuous beep with the
front panel OH LED on)
