Sux, Ive overlooked the PSU before in tech tinkering, makes you feel like an idiot. Google and somewhere *escapes me right now, cuz its too early* but there is a PSU wattage calculator program to input what you have in the build and how big of a PSU you ACTUALLY need to run the system without faults. Then hitup newegg.com and see what you can find, itll take a couple days for shipping but they usually have great sales every week. May get lucky

I have an AMD xII 3.4 Dual Core CPU, MSI 870A Fuzion mobo, 2x 2gb Corsair DDR3 1600 ram, nVidia GTS250 GPU, Sata 3gb/s 640GB and Sata 3gb/s 1.5TB HD, Sata 22x dual layer DVD Burner, 7 blue led 140mm fans in my CM690 CoolerMaster Case and its all running off a CoolerMaster 550 watt PSU. It doesnt take a huge PSU for a good gaming system to run, just gotta figure what you need and up the bar just a bit for safety