There should be a jumper on the motherboard that will let you reset the CMOS to default. Just change the jumper, hit the power button twice (like youare turning it on and off, but nothing will happen), and reset the jumper. When you power up the system all the BIOS settings should be at default.
Now some motherboards will do the same if you unplug and plug it back in 5 times. Others require you to pop the battery out for a few seconds to reset the BIOS.
This is one disadvantage to overclocking without jumpers. If the system does not post, you need to reset the BIOS and redo all the tweeks again to get it set back to what you were using. Some do have a safe recovery feature that will reload the last BIOS if the board fails to boot and uses a redundant BIOS. This also gives you recovery pertection from a failed BIOS Flash or a Virus that effects the BIOS.
The COMPUTER is your FRIEND!
Happiness is manditory.
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