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4 Error Messages and Beep Codes
4.1 BIOS Beep Codes
Audible error code (beep code) information during POST is routed to the audio codec
and can be heard through attached speakers. (see Table 30).
Table 30. BIOS Beep Codes
F2 Setup/F10 Boot Menu
Prompt
One 0.5 second beep when BIOS is ready to
accept keyboard input
932 Hz
BIOS update in progress None
Video error (no add-in
graphics card installed)
On-off (1.0 second each) two times, then
2.5-second pause (off), entire pattern repeats
(beeps and pause) once and the BIOS will
continue to boot.
932 Hz
For processors requiring an
add-in graphics card
Memory error On-off (1.0 second each) three times, then
2.5-second pause (off), 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
4.2 Front-panel Power LED Blink Codes
Whenever a recoverable error occurs during POST, the BIOS causes the board’s front
panel power LED to blink an error message describing the problem (see Table 31).
Table 31. Front-panel Power LED Blink Codes
F2 Setup/F10 Boot Menu
Prompt
None
BIOS update in progress Off when the update begins, then on for 0.5 seconds,
then off for 0.5 seconds. The pattern repeats until
the BIOS update is complete.
Video error (no add-in
graphics card installed)
On-off (1.0 second each) two times, then 2.5-second
pause (off), entire pattern repeats (blink and pause)
until the system is powered off.
For processors requiring
an add-in graphics card
Memory error On-off (1.0 second each) three times, then
2.5-second pause (off), entire pattern repeats (blinks
and pause) until the system is powered off.
Each beep will be accompanied by the following blink
pattern: .25 seconds on, .25 seconds off,
.25 seconds on, .25 seconds off. This will result in a
total of 16 blinks.
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