I've tried all of the above. Resetting my motherboard, reseating my video card and ram. The strange thing about this is that my computer worked just fine last night. It's just sometimes (and usually in the morning :|) that it doesn't boot the first time. this morning it did it twice in a row. And after waiting for it, I decided to cut the power in the back and try again. So I did that and now it's just restarting after it starts.
I have a rosewill 550w PSU.