Table of Contents
Advertisement
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 39).
Table 39. Front-panel Power LED Blink Codes
Type
F2 Setup/F10 Boot
Menu Prompt
BIOS update in progress Off when the update begins, then on for
Video error (no add-in
graphics card installed)
Memory error
Thermal trip warning
4.4
BIOS Error Messages
Table 40 lists the error messages and provides a brief description of each.
Table 40. BIOS Error Messages
Error Message
CMOS Battery Low
CMOS Checksum Bad
Memory Size Decreased
No Boot Device Available
Pattern
None
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.
Error Messages and Beep Codes
Note
For processors requiring an
add-in graphics card
67
Advertisement
Table of Contents
