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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 14. These beep codes can be heard through a speaker attached to the board's
line out audio jack (see Figure 2, B on page 16) or the piezoelectric speaker header
(see Figure 9, D).
Table 14. BIOS Beep Codes
Type
BIOS update in
progress
(Note)
Video error
Memory error
Thermal trip warning
Note: Disabled by default BIOS Setup option.
Pattern
None
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.
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.
Alternate high and low beeps (1.0 second
each) for eight beeps, followed by system
shut down.
Frequency
932 Hz
When no VGA option ROM
is found.
932 Hz
High beep 2000 Hz
Low beep 1500 Hz
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