A Error Messages and Indicators
Intel Desktop Board DP55SB 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 14).
Table 14. BIOS Beep Codes
Type
Processor
initialization complete
POST complete
Video error
Memory error
Thermal trip warning
Table 15. Front-panel Power LED Blink Codes
Type
Processor
initialization complete
POST complete
BIOS update in
progress
Video error
Memory error
Thermal trip warning
Pattern
One 0.5 second beep when the CPU initialization process
completes.
One 0.5 second beep when POST completes.
On-off (0.5 seconds each) two times, then 3.0 second pause
(off), entire pattern repeats (beeps and pause) until the system
is powered off.
On-off (0.5 seconds each) three times, then 3.0 second pause
(off), entire pattern repeats (beeps and pause) until the system
is powered off.
On-off (0.5 seconds each) four times, then 3.0 second pause
(off), entire pattern repeats (beeps and pause) until the
sixteenth beep, then ends.
Pattern
On when the system powers up, then off for 0.5 seconds.
On when the system powers up, then off for 0.5 seconds.
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.
On-off (0.5 seconds each) two times, then 3.0 second pause
(off), entire pattern repeats (blink and pause) until the system is
powered off.
On-off (0.5 seconds each) three times, then 3.0 second pause
(off), entire pattern repeats (blinks and pause) until the system
is powered off.
On-off (0.5 seconds each) four times, then 3.0 second pause
(off), entire pattern repeats (blinks and pause) until the
sixteenth blink, then ends.
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