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5. Appendix
5.1 Troubleshooting (How to Get Technical Support?)
5.1.1 Q & A
Q: Do I need to clear the CMOS before I use a new motherboard to assemble my
new computer system?
A: Yes, we highly recommend that you clear the CMOS before installing a new motherboard.
Please move the CMOS jumper from its default 1-2 position to 2-3 for a few seconds, and
then back. When you boot up your system for the first time, follow the instructions in the
user's manual to load the optimized defaults.
Q: If my system hangs when I update the BIOS or set the wrong CPU parameters,
what should I do?
A: Whenever you update the BIOS or if the system hangs due to wrong CPU parameters
setting, always clear CMOS jumper before booting up again.
Q: Why does the system fail to boot up again right after a mechanical power-off?
A: Please keep a 30-second interval between each mechanical power On/Off.
Q: Why does the system fail to boot up and nothing displays on the screen after I
did some over-clocking or non-standard settings inside the BIOS?
A: It should not cause hardware or permanent damage to motherboard when BIOS settings
were changed from default to over-clocking or non-standard status.
We suggest the following three troubleshooting methods to discharge CMOS data, recover
the hardware default status, and then making the motherboard work again. There is no
need to bother returning the motherboard to where you bought it from or go through an
RMA process.
Step 1. Switch off the power supply unit and then switch it on again after one minute. If
there is no power-switch on the power supply unit, disconnect its power cord for
one minute and then reconnect.
Press and hold the <Insert> key on the keyboard, and press the power-on button
to boot up system. If it works, release the <Insert> key and hit <Del> key to enter
the BIOS setup page to apply the correct settings.
If the situation remains the same, repeat the procedures in Step 1 three times, or
try Step 2.
Step 2. Switch off the power supply unit or disconnect the power cord. Open the chassis
cover. Locate the CCMOS jumper near the button battery. Change the jumper
position from default 1-2 to 2-3 for one minute to discharge the CMOS data, and
then put it back to default 1-2 position.
Close the chassis and switch on the power supply unit or plug in the power cord.
Press the power-on button to boot up system. If it works, hit <Del> key to enter
the BIOS setup page to do the correct settings.
If the situation remains the same, try Step 3.
Step 3. The same procedure as Step 2, but while discharging the CMOS data, pull out the
ATX power connectors from motherboard and remove the button battery during
CMOS discharge.
AN-M2/AN-M2HD
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