The CMOS can reset itself to its factory settings. This is wanted incase problematic changes occur - for example Overclocking side effects.

Reseting

Shunt

  1. Unplug computer
  2. Move the shunt from wires 1 and 2 to wires 2 and 3
  3. Wait 10s
  4. Move shunt back to wires 1 and 2
  5. Boot up system

Without Shunt

Touch a screwdriver to the jumpers for 10s

Battery BIOS

Remove the CMOS battery then place it back in

BIOS Menu

Reset to default settings in the BIOS Menu