A2SDV-4C/8C-LN8F/LN10PF User's Manual
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Appendix A
BIOS Codes
BIOS Error POST (Beep) Codes
During the POST (Power-On Self-Test) routines, which are performed upon each system
boot, errors may occur.
Non-fatal errors
are those which, in most cases, allow the system to continue to boot. These
error messages normally appear on the screen.
Fatal errors
will not allow the system to continue with bootup. 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 table
below lists some common errors and their corresponding beep codes encountered by users.
BIOS Beep (POST) Codes
Beep Code
Error Message
Description
1 beep
Refresh
Circuits have been reset (Ready to power up)
5 short, 1 long
Memory error
No memory detected in system
5 long, 2 short
Display memory read/write error
Video adapter missing or with faulty memory
1 long continuous
System OH
System overheat condition
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