unplug anything you do not need except motherboard, video, CPU, and 1 stick of RAM so you can reduce the amount of power you need. that should tell you for sure if you do not have enough power. I don't think it's your power supply though. It could be the brand of memory you are using, but more likely I think your problem is in your motherboard. It sounds to me like the motherboard failed on you. have you tried resetting CMOS on it? look in the motherboard manual for resetting CMOS