Sure enough, switching out the graphics card seems to have solved the issue. My card is an EVGA Geforce GT 240 512MB, hopefully yours is the same? I should have done some more research... people seem to be having all sorts of problems with this EVGA card: Customer Reviews Of EVGA...
Well we might have just found the culprit! I have another graphics card laying around... an 8600GT I believe. I'll throw that in here and see if it solves the problem. Probably sometime later today.
Hmmm... well your graphics card doesn't happen to be a Nvidia GT 240 does it? That's what I have. Although I'm using a Logitech mouse, I did not install any Logitech drivers/software of any sort (i.e. Setpoint).
Looks like we're all in the same boat... I'm having a nearly identical problem. I just built a new computer 4 days ago and in order to successfully startup for the first time each day, I need to shut off my power supply or else I get a blue screen quickly followed by a restart. I've even been...