I recently bought a Antec 350 watt PSU to try to get a older P4 system working. When I finished setting everything up I plugged it in and BANG there went my brand new PSU. Could this have been a fauly PSU or could the motherboard have killed it? Someone had written "Bad" on the back of the motherboard so I am inclined to think it's the problem, I'm just not sure. Any opinions?