Intel D2550MUD2 Product Guide

Intel Desktop Board D2550MUD2 Product Guide
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BIOS Front-panel Power LED Blink Codes
The BIOS also blinks the front-panel power LED to signal status messages and error
messages indicating certain recoverable errors that occur during the POST. The blink
codes are listed in Table 18.
Table 18. BIOS Front-panel Power LED Blink Codes
Type Pattern Note
BIOS update in
progress
Off when the update begins, then on for
0.5 second, and then off for 0.5 second.
The pattern repeats until the BIOS update
is complete.
Video error
(Note)
On-off (1.0 second each) two times, then a
2.5-second pause (off); the entire pattern
repeats (blinks and pause) until the system
is powered off.
When no VGA option ROM
is found.
Memory error
On-off (1.0 second each) three times, then
a 2.5-second pause (off); the
entire pattern
repeats (blinks and pause) until the system
is powered off.
Thermal trip warning
Each beep will be accompanied by the
following blink pattern: 0.25 second on,
0.25 second off, 0.25 second on,
0.25 second off. This results in a total of
16 blinks followed by system shut down.
Note: Disabled by default BIOS Setup option.
POST Error Messages
The BIOS also displays error messages on the video monitor when certain recoverable
errors occur during the POST. Table 19 lists the error messages with a brief
description of each.
Table 19. POST Error Messages
Error Message
Explanation
CMOS Battery Low
The battery may be losing power.
CMOS Checksum Bad
The CMOS checksum is incorrect. The 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.

Intel D2550MUD2 Specifications

General

Brand	Intel
Model	D2550MUD2
Category	Motherboard
Language	English