Hi All, My son's comp was overheating and crashing so I bought a new case with a 500w PSU. After transfering evrything onto the new case nothing happens when I press the power button. How do I know if I had killed the mobo during the transfer or the PSU in the new case is DOA? Pls, any suggestions will be gratefully received. BYW, I have turned on the switch at the back of the PSU before trying to pwer up.