As if I don't have

As if I don't have enough problems
I woke up this morning and noticed that the computer in the den that I share with the kid wasn't on. No problem just turn it off and back on. Nothing. This is not what I want to deal with at 6am. Sent some email to a friend more knowledgeable that I and we have agreed that it is either the motherboard or the power supply. I hope it is the power supply.