Hi, If all else fails then check your Mother Board Manual for the CMOS battery jumper. You move it from pins 1 & 2 to 3 & 4, wait a few seconds and then move it back to 1 &2. If you can't find it you can remove the CMOS battery. Wait a couple of hours for the CMOS circuit Filter capacitors to discharge and then put the battery back. Do it with the power disconnected from the wall outlet. When you put it back and reboot you will be back to default settings in the CMOS and the OCing will be gone. You can go back into setup and reset anything you had reset from the defaults. Jim