I also have an asus mobo and after upgrading the bios version the same thing happened to me. So when u say you have cleared all the components i take it you mean you have already tried
1) Take the cmos battery out
2) Move the cmos memory jumper thing from 1and 2, to 2 and 3 for 10-15 seconds
3) Reinstall the battery
If you have done that (it didnt work for me)
Does your motherboard have a speaker on the motherboard??
If it does take out the ram from the motherboard and then boot your computer up and if you get 3 beeps that means the bios is still working! If not then you might have damaged your mobo.
I didnt have a speaker onboard so i was not sure!! I borrowed a different stick of ram from my friend and that seemed to do the trick !! So try it out and tell me how everything goes!