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A Error Messages and Indicators
Desktop Board D915GEV/D915GUX/D915GAV/D915GAG reports POST errors in two ways:
• By sounding a beep code
• By displaying an error message on the monitor
BIOS Beep Codes
The BIOS also issues a beep code (one long tone followed by two short tones) during POST if the
video configuration fails (a faulty video card or no card installed) or if an external ROM module
does not properly checksum to zero. Table 16 lists the BIOS codes.
Table 16. Beep Codes
Number of Beeps Description
1 Refresh failure
2 Parity cannot be reset
3 First 64 K memory failure
4 Timer not operational
5 Processor failure (Reserved; not used)
6 8042 GateA20 cannot be toggled (memory failure or not present)
7 Exception interrupt error
8 Display memory R/W error
9 (Reserved; not used)
10 CMOS Shutdown register test error
11 Invalid BIOS (such as, POST module not found)