Well, I think I found the source of the PC troubles: the fan/vent areas, whatever: caked almost solid with what I assume is sentient dust by this point (very hard to visually notice with the weird lighting in this room and the angle the machine is at). Oooookay. I know what my task for the day is, then... bah. In other news, Best Buy still sucks. New machine was supposed to get here 2 days ago.