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A Error Messages and Indicators
This appendix describes error messages generated by the Desktop Board’s BIOS. The
BIOS indicates these error messages with LED blink codes, speaker beep codes, and
by text displayed on the PC monitor.
Front-panel Power LED Blink and Speaker
Beep Codes
Whenever a recoverable error occurs during POST, the BIOS provides basic status and
error messages through front-panel power LED blink codes (Table 16) as well as
throug
h audible beep codes (Table 17).
Table 16.
BIOS Front-panel Power LED Blink Codes
Type Pattern Note
F2 Setup/F10 Boot
Menu Prompt
None
BIOS update in
progress
Off when the update begins, then on for
0.5 second, then off for 0.5 second. The
pattern repeats until the BIOS update is
complete.
Video error (no add-
in graphics card
installed)
On-off (0.5 second each) two times, then a
3.0-second pause (off), the entire pattern
repeats (blink and pause) until the system
is powered off.
For processors requiring
an add-in graphics card
Memory error On-off (0.5 second each) three times, then
a 3.0-second pause (off), the entire pattern
repeats (blinks and pause) until the system
is powered off.
Thermal trip warning Each beep will be accompanied by the
following blink pattern: .25 seconds on,
.25 seconds off, .25 seconds on, .25
seconds off. This results in a total of
32 blinks.