Gateway E-4650 System Manual page 103

If POST completes normally, the BIOS issues one short beep before passing
control to the operating system.
Short Beeps
1
2
3
4
5
6
7
8
9
10
11
Description
Refresh failure
Parity cannot be reset
First 64 KB memory failure
Timer not operational
Not used
8042 GateA20 cannot be toggled
Exception interrupt error
Display memory R/W error
Not used
CMOS shutdown register test error
Invalid BIOS (for example, POST module not found)
95
Beep codes