I would try restarting explorer.exe. Also, before you reinstall everything, burn a disk of Ubuntu and see if it orks correctly. It may be a hardware fail.
Also: Mac Ftl, restrictive pieces of overhyped over expensive stuff. I do admit that they domlook very nice, but they're way overpriced and overhyped. Too many Maccigarettes making jokes about BSOD, even when I've yet to get a windows related BSOD. (Overclocking resulted in many BSOD.)