Intel DG33BU specifications Speaker, Bios Beep Codes, Bios Error Messages

4 Error Messages and Beep Codes

What This Chapter Contains
4.1	Speaker	67
4.2	BIOS Beep Codes	67
4.3	BIOS Error Messages	67
4.4	Port 80h POST Codes	68

4.1Speaker

The board-mounted speaker provides audible error code (beep code) information during POST.

For information about	Refer to
The location of the onboard speaker	Figure 1, page 12

4.2BIOS Beep Codes

Whenever a recoverable error occurs during POST, the BIOS displays an error message describing the problem (see Table 34).

Table 34. Beep Codes

Type	Pattern	Frequency
Memory error	Three long beeps	1280 Hz
Thermal warning	Four alternating beeps:	High tone:	2000 Hz
	High tone, low tone, high tone, low tone	Low tone:	1600 Hz

4.3BIOS Error Messages

Table 35 lists the error messages and provides a brief description of each.

Table 35. BIOS Error Messages

Error Message	Explanation
CMOS Battery Low	The battery may be losing power. Replace the battery soon.
CMOS Checksum Bad	The CMOS checksum is incorrect. CMOS memory may have been
	corrupted. Run Setup to reset values.
Memory Size Decreased	Memory size has decreased since the last boot. If no memory
	was removed, then memory may be bad.
No Boot Device Available	System did not find a device to boot.

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