Intel BOXDG41AN, Technical Product Specification, Page: 68 / 88

Intel Desktop Board DG41AN Technical Product Specification
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4.3 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 37).
Table 37. Front-panel Power LED Blink Codes
Type Pattern Note
Processor initialization
complete On when the system powers up, then off for
0.5 seconds.
POST complete On when the system powers up, then off for
0.5 seconds.
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 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. When no VGA option ROM is
found.
Memory error 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.
Thermal trip warning 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.
4.4 BIOS Error Messages
Whenever a recoverable error occurs during POST, the BIOS displays an error
message describing the problem. Table 38 lists the error messages and provides a
brief description of each.
Table 38. BIOS Error Messages
Error Message Explanation
CMOS Battery Low The battery may be losing power. Replace the battery soon.
CMOS Checksum Bad The CMOS checksum is incorrect. CMOS memory may have been
corrupted. Run Setup to reset values.
Memory Size Decreased Memory size has decreased since the last boot. If no memory
was removed, then memory may be bad.
No Boot Device Available System did not find a device to boot.