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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 17.
Table 17.
BIOS Beep Codes
Type Pattern Frequency
BIOS update in
progress
None
Video error
(Note)
On-off (1.0 second each) two times, then a
2.5-second pause (off); the entire pattern
repeats (beeps and pause) once and the
BIOS will continue to boot.
932 Hz
When no VGA option ROM
is found.
Memory error On-off (1.0 second each) three times, then
a 2.5-second pause (off); the entire pattern
repeats (beeps and pause) until the system
is powered off.
932 Hz
Thermal trip warning Alternate high and low beeps (1.0 second
each) for eight beeps, followed by system
shut down.
High beep 2000 Hz
Low beep 1500 Hz
Note: Disabled by default BIOS Setup option.
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