A Error Messages and Indicators

Desktop Board D845EPI reports POST errors in two ways:

By sounding a beep code

By displaying an error message on the monitor

BIOS Beep Codes

The BIOS beep codes are listed in Table 37. 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 37. Beep Codes

Number of Beeps

1

2

3

4

5

6

7

8

9

10

11

Description

Refresh failure

Parity cannot be reset

First 64 K memory failure

Timer not operational

Processor failure (Reserved; not used)

8042 GateA20 cannot be toggled (memory failure or not present)

Exception interrupt error

Display memory R/W error

(Reserved; not used)

CMOS Shutdown register test error

Invalid BIOS (such as, POST module not found)

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Intel D845EPI manual Error Messages and Indicators, Bios Beep Codes, Number of Beeps Description