A
174
Debug LED POST and Troubleshooting
Abnormal Debug LED POST and Troubleshooting
POST
(hex)
79
88
FF
Debug Code
Action
Power on
-> Prompt Stopped
at
79
Power on
-> Prompt Stopped
at
88
Power on
-> Prompt Stopped
at
FF
BIOS
Pr
ogram
Definition
There is no “79” definition on the
Award BIOS code. (BIOS program executed the wrong process therefore showing the wrong POST
code.)
There is no “88” definition on the
Award BIOS code. (BIOS program executed the wrong process therefore showing the wrong POST
code.)
Definition: BIOS process completed.
(BIOS program executed the wrong process therefore showing the wrong POST
code.)
Possible Cause
1.
Mixed-up BIOS data.
2.
MB is defective.
(NB chip may be defective.)
1.
Mixed-up BIOS data.
2.
MB is defective.
(NB chip may be defective.)
1.
Mixed-up BIOS data.
2.
MB is defective.
(NB chip may be defective.)
Solution
1.
Clear the
CMOS data.
2.
RMA
action required.
1.
Clear the
CMOS data.
2.
RMA
action required.
1.
Clear the
CMOS data.
2.
RMA
action required.
Index
Clearing
CMOS
Data
2-3 On:
Clear CMOS Data
1-2
On:
Nor
mal
(default)
3
1
2
3
1
2
1.
Turn-of
f and unplug the AC power
.
2.
Mo
ve th
e jumper cap from pins 1-2
to pins 2-3.
3.
W
ait for
5 seconds then mo
ve the
jumper cap back to
pins 1-2.
Totally
Discharging
the
Motherboard
Unplug the AC power and remo
ve the battery for 5 minutes then reinstall
the battery and plug the AC power back on.
