i had a probleim with that it ended up being my motherboards ide driver dam biostar to hell! but other then that is you comp over clocked at all because it may jsut be crashing.
I bet that just because your all excited about this, your new part won't fix the problem. things like that happen to me all the time, get a new computer part only for it to not work. happened for my X-530's, but after i bought a new sound card, they work like a charm.