Intel D425KT manual A Board Status and Error Messages, BIOS Beep Codes

A Board Status and Error Messages

This appendix describes status and error messages generated by the Desktop Board’s BIOS. The BIOS indicates these error messages with front-panel Power LED blink codes, speaker beep codes, and by displaying text on the video monitor.

BIOS Beep Codes

The BIOS uses audible beep codes to signal status messages and error messages indicating recoverable errors that occur during the POST. The beep codes are listed in Table 12. These beep codes can be heard through a speaker attached to the board’s line out audio jack (see Figure 2, B on page 15).

Table 12. BIOS Beep Codes

Type	Pattern	Frequency
F2 Setup/F10 Boot	One 0.5-second beep when the BIOS is	932 Hz
Menu Prompt	ready to accept keyboard input
Video error	On-off (1.0 second each) two times, then a	932 Hz
	2.5-second pause (off); the entire pattern	When no VGA option ROM
	repeats (beeps and pause) once and the	is found.
	BIOS will continue to boot.
Memory error	On-off (1.0 second each) three times, then	932 Hz
	a 2.5-second pause (off); the entire pattern
	repeats (beeps and pause) until the system
	is powered off.
Thermal trip warning	Alternate high and low beeps (1.0 second	High beep 2000 Hz
	each) for eight beeps, followed by system	Low beep 1500 Hz
	shut down.

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