Computer loading problems.

[Splych]

So I recently, attempted to O.C. my AMD Phenom II X2 550 BE with a Biostar TA790GX 128M.

I was on a Windows 7 O/S, and used the program AMD Overdrive.

After I tried this, I adjusted the voltage and multiplier manually. I think I may have done something wrong because after I reset it, the computer is just stuck on the screen where it says:
"Press Del to enter BIOS setup etc."

Even if you press those buttons, they won't respond, and would just be stuck on the screen. Does anyone know what I can do? It won't even pass the screen... So I have no idea what to do >_<

 

[enzo matrix]

Try resetting the bios settings stored in the cmos.

1. Turn off the computer.
2. Unplug the computer.
3. remove the cmos battery that looks like a watch battery.
4. put the battery back in, plug it back in and start her up.