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Intel Desktop Board DP67BG Product Guide
Diagnostic LEDs
The Desktop Board provides eight LEDs that allow you to monitor the board's progress
through the BIOS Power-on Self-Test (see Figure 6). At initial power on, all the LEDs
are off. When the BIOS starts an activity such as memory initialization, the
corresponding LED starts flashing. Once the activity has completed, the LED will
remain on.
Table 5. Diagnostic LEDs
Item/Callout
in Figure 6
Activity
A
Watch Dog Timer Fire/
Back to BIOS
B
Processor Initialization
C
Memory Initialization
D
Video Initialization
E
USB Initialization
F
Hard Drive Initialization
G
Option ROM Initialization
H
OS Start
26
LED
Color
Description
Red
When the watch dog timer fires to reset
the board, this LED will flash.
In addition, this LED will light and stay
on when the Back to BIOS button has
been pressed.
Green
This LED will flash when the processor
initialization activity starts. Then the
LED will stay on when processor
initialization is complete.
Green
This LED will flash when the memory
initialization activity starts. Then the
LED will stay on when memory
initialization is complete.
Green
This LED will flash when the video
initialization activity starts. Then the
LED will stay on when video
initialization is complete.
Green
This LED will flash when the USB
initialization activity starts. Then the
LED will stay on when USB initialization
is complete.
Green
This LED will flash when the hard drive
activity starts. Then the LED will stay
on when hard drive initialization is
complete.
Green
This LED will flash when the option ROM
activity starts. Then the LED will stay
on when option ROM initialization is
complete.
Green
Just before BIOS transfers control to
the operating system, this LED will light
and stay on.
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