Intel D945GCLF manual Bios Error Messages, Bios Front-panel Power LED Blink Codes, Bios Beep Codes

A BIOS Error Messages

BIOS Front-panel Power LED Blink Codes

The front-panel power LED is used by the BIOS to display messages. For example, the LED is on when the system is powered on, and blinks off for 0.5 second when processor initialization is complete. In addition, whenever a recoverable error occurs during POST, the BIOS causes the front-panel power LED to blink an error message describing the problem (see Table 8).

Table 8. BIOS Front-panel Power LED Blink Codes

Type	Pattern
Processor initialization complete	On when system powers up, then off for 0.5 second
POST complete	On when system powers up, then off for 0.5 second
BIOS update in progress	Off when update begins, then on for 0.5 second, then off
	for 0.5 second; pattern repeats until BIOS update is
	complete
Video error	On-off (0.5 second each) two times, then 3.0 second pause
	(off) between on-off blink pattern; repeat entire pattern
	(two on-off blinks and pause) until system is powered off
Memory error	On-off (0.5 second each) three times, then 3.0 second
	pause (off) between on-off blink pattern; repeat entire
	pattern (three on-off blinks and 3-second pause) until
	system is powered off
Thermal warning	On-off (0.5 second each) four times, then 3.0 second
	pause (off) between on-off blink pattern; repeat entire
	pattern (four on-off blinks and 3-second pause) until 16th
	on blink, then end

BIOS Beep Codes

The BIOS beep codes are listed in Table 9. These beep codes can be heard through a speaker attached to the board’s line out jack (see Figure 2, B on page 14.

Table 9. BIOS 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

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