Motherboard went bad. I replaced the motherboard for as low as $250. You'll get a higher price if you need a better motherboard. How did it go bad? Don't really know. Several of my guesses are(in order of probability):
1) Static Electricity when I was upgrading the computer. It was possible that one of the screws that hold the Motherboard weren't firmly screwed in, resulting a touch with case, and a shock.
2) Old motherboard (5 years old?!)
3) It didn't want live.