Intel Understanding Errors and BIOS Codes for DH55HC Models

A Error Messages and Indicators

Intel Desktop Board DH55HC reports POST errors in two ways:

•By sounding a beep code and blinking the front panel power LED

•By displaying an error message on the monitor

BIOS Error Codes

Whenever a recoverable error occurs during POST, the BIOS causes the board’s speaker to beep and the front panel power LED to blink an error message indicating the problem (see Table 17).

Table 17. BIOS Beep Codes

Type	Pattern	Frequency/Comments
F2 Setup/F10 Boot	One 0.5 second beep when the BIOS is	932 Hz
Menu Prompt	ready to accept keyboard input
BIOS update in	None
progress
Video error (no add-	On-off (1.0 second each) two times, then a	932 Hz
in graphics card	2.5-second pause (off), the entire pattern	For processors requiring
installed)	repeats (beeps and pause) once and the	an add-in graphics card
	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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