My computer has been crashing with BSODs and I couldn't really fix the problem after trying multiple things, so I decided to format my whole computer. After low-level formatting the hard drive with the hard drive manufacturer utility (which worked fine), I proceeded with installing the OS. When the OS was in the process of formatting the hard drive in preparation for the install, I received a BSOD. It was a DRIVER_IRQL_NOT_LESS_OR_EQUAL BSOD. Since it was prior to even a fresh install of the OS, it is not a driver's problem (and hence there was no filename associated with the BSOD error), so I'm guessing it must be hardware. I've ran memtest and the extended test for the hard drive, which both came out fine. So I've narrowed it down to possibly the vid card, motherboard, cpu or psu. Aside from swapping out those hardwares (which I don't have spares of), is there any other way I can further isolate the problem? Thanks a lot for the help.