A
1 7 2
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 Program Definition
There is no “79” definition on the
A
ward BIOS code.
(BIOS program executed the wrong
process therefore showing the wrong
POST code.)
There is no “88” definition on the
A
ward 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: Normal
(default)
3
12
3
12
1
.
Turn-off and unplug the AC power.
2
.
Move the jumper cap from pins 1-2 to pins 2-3.
3
.
W
ait for 5 seconds then move the jumper cap back to pins 1-2.
T
otally Discharging the Motherboard
Unplug the AC power and remove the battery for 5 minutes then reinstall
the battery and plug the AC power back on.
