Somethings probably shorted on the board, I don't think there would be any other reason for this happening, unless your computer is possessed.
If I were you I'd follow these steps in order.
1) Finish your papers
2)Troubleshoot the board (see if all the components work in another rig and check if the mobo works with known working components) Replace the faulty part (if any).
3)If that doesn't work, get your rig exorcised.
Hope this helped.