How to reset your CMOS (Video) - CyberPowerPC UK

If your PC has a button on the back to reset the CMOS, you can hold for 10 seconds while the PC is switched off.

If your PC doesn't have this button please see the below video on how to reset the CMOS on your motherboard.

1. Turn off all peripheral devices connected to the computer.
2. Disconnect the power cord from the AC power source.
3. Remove the computer cover.
4. Find the battery on the board. The battery may be in a horizontal or vertical battery holder, or connected to an onboard header with a wire.
5. Remove the battery:
   1. If the battery is in a holder, note the orientation of the + and – on the battery. Gently pry the battery free from its connector.
   2. If the battery is connected to an onboard header with a wire, disconnect the wire from the onboard header.
6. Wait 30 minutes, then reconnect the battery.
7. Put the computer cover back on.
8. Plug the computer and all devices back in.