4xem BBPCHOME, User Manual, Page: 40 / 77

Mainboard User’s Manual
3.8. Setting Jumpers
Refer to the following illustration and instructions to set the jumpers
on your motherboard.
3.8.1. Clear CMOS Jumper (JP4)
You may need to clear the CMOS if your system cannot boot up
because you forgot your password, the CPU clock setup is incorrect,
or the CMOS setting need to reset to default values after the system
BIOS has been updated.
Refer to the following solutions to reset your CMOS setting:
Solution A
1. Power off the system and disconnect the power cable.
2. Place a shunt to short pin 2 and pin 3 of JP4 for five
seconds.
3. Place the shunt back to pin 1 and pin 2 of JP4.
4. Power on the system.
Setting Jumpers
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