Bios possibly corrupt need help FAST (IMPORTANT)

[PCs_ForTheWin]

ok, i turn on the computer and then my initial bios screen loads but without its background image. everything functions but if i try to enter setup (F10) it says its gonna but it just keeps saying that. my motherboard LED is on, i hear no beeps. i was overcloking. my pc specs are as follows

(4 gig ddr ram / 250 gb HDD / 256 mb Nvidia Geforce 6200 / 2.66 ghz intel pentium 4. (overclocked to 2.9)
if im missing anything please ask, i cant think straight right now and am sorry if anything makes no sense.

Great Fing news, i walked into my room with the pc (it was all whole time) and it said changes were made cd dvd hdd cmos cheaksum invalid etc. so i hit F1 and now the image is back, wtf i happening, someone please explain so i know what just happend, im flooded with emotion right now and can think straight. id like so explination.

 

[detox1]

first thing I would do is reset the CMOS.
What motherboard do you have? that way I can look up as to where the jumper is.

 

[JCB1]

i guess there was something held in memory and it was cleared when u turned your computer off?? Or possibly the system overheated and the tempreature returned to normal when u turned the PC on again

 

[Indigo]

Unplug the power to the system. Hold in the power button for 10 seconds (yes, with it unplugged) and then open the case and reset your CMOS/BIOS. Plug the power back in and turn the system on. It should function as normal. If it doesn't, it's remotely possible you fried something. I hope in your overclocking endeavors you weren't fiddling with power settings yet.