Well, I rebuilt the whole computer this morning. Took it completely apart and then put it together again. Switched from the P182 to the Coolermaster Stacker case for more air flow. I now have 5 120mm fans installed in addition to the motherboard, CPU and videocard fans. So I don't think cooling is the problem. I read on a forum that disabling NCQ could fix it, but it didn't. I'm not sure what to do now. Hopefully the eVGA forums will help.