Beep Codes - Intel BLKD865PERL Technical Product Specification

If POST completes normally, the BIOS issues one short beep before passing control to the
operating system.
Table 86.

Beep Codes

Beep Description
1 Refresh failure
2 Parity cannot be reset
3 First 64 KB memory failure
4 Timer not operational
5 Not used
6 8042 GateA20 cannot be toggled
7 Exception interrupt error
8 Display memory R/W error
9 Not used
10 CMOS Shutdown register test error
11 Invalid BIOS (e.g. POST module not found, etc.)
Error Messages and Beep Codes
131