BSOD in Win7 x64 when Windows Boots

Hey, I'm new to the forums, and I'm having some trouble with a computer I built not more than 2 months ago. The problem started a couple weeks ago, and it happens every time the computer boots. It occasionally loads the sign-in screen and allows me to log in, but then immediately blue-screens. Other times it will get to the "Starting Windows" screen and then go black and restart.

I tried switching memory sticks around, and I get the same results every time. I've gotten everything I need off the hard drive, so I can reformat if need be. I'm fairly new at troubleshooting stuff like this, so you guys will likely have to explain everything. I've attached the minidump; let me know if there's anything else I need to provide.

System specs:

AMD Phenom II X2
ASRock 880GMH MB
2 x 2GB Avexir DDR3
480W PSU

Running integrated graphics and sound, only card in it is a wi-fi card.

Running Win7 Home Premium x64

Thanks,
Tom