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4
Error Messages and Blink Codes
4.1
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 43).
Table 43. Front-panel Power LED Blink Codes
Type
BIOS update in progress
(Note)
Video error
Memory error
Thermal trip warning
Note: Disabled per default BIOS setup option.
4.2
BIOS Error Messages
Table 44 lists the error messages and provides a brief description of each.
Table 44. BIOS Error Messages
Error Message
CMOS Battery Low
CMOS Checksum Bad
Memory Size Decreased
No Boot Device Available
Pattern
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 (1.0 second each) two times, then 2.5-second
pause (off), entire pattern repeats (blink and pause)
until the system is powered off.
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.
Explanation
The battery may be losing power. Replace the battery soon.
The CMOS checksum is incorrect. CMOS memory may have been
corrupted. Run Setup to reset values.
Memory size has decreased since the last boot. If no memory was
removed, then memory may be bad.
System did not find a device to boot.
Note
When no VGA option ROM is
found.
83
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