ok, we have a Dell Pc, It won't start, when it's plugged in the green LED next to the motherboard connector is on, I want to verify if my problem is the power supply itself, the powerbutton or motherboard, I'm pretty sure its the power supply though. Can someone tell me witch 2 leads on the power supply connector to the motherboard(P1) need to be jumped together so I can try to manually turn on the power supply. Or if you guys have any other ideas on torubleshooting this let me know too. This is one of those things where it worked fine yesterday and she shut it off at the end of the day and it wouldn't start this morning. thanks.