Wasn't the graphics driver, since it's still been doing it. At first, I thought it was a hard drive issue, so I had CHKDISK run during startup to see if there was any problem with at least the drive surface. It crashed during that, and since(according to what it told me when I tried to run it through Windows) you can't run it while it's in use, I figured it was processor issue.
After thinking "Fuuuuuck!" to myself, I opened the case. Inside the CPU fan was a solid layer of dust about 1-2mm thick, with a little hair mixed in(with no idea how the hell it got there, it was longer than mine), and more in the space between the fan and the part that connects to the CPU. There was even some dust in the processor housing, thankfully the conenctor pins were alright. After spending quite a bit of time digging under the fan blades with a cotton swab, I managed to get at least most of it out and blowing into it cleaned it out some more. Getting the fan back on was a different story. Apparently, when I put the damn thing on the first time, the mounting feet were messed up(crappy Intel parts, I think Intel designed it so you're not supposed to remove it after installing). And after yelling "Fuuuuuck!" quite audibly to myself, several times, I managed to get them back in.
So far, it's running fine. The fan sounds a bit different, but I think removing 2mm of dust from under it will do that.