[Oz]

Neutrino is spot on the money.

My suggestion for DR would be to get yourself a copy of Mini PE (a bootable CD iso) and boot into it. It has a dizzying array of utils for attempting to fix your problems.

But there's absolutely no guarantee's, and in all likely hood your data is gone.

Do you have a backup of it? If not, why not? Especially if you are going to severely fuck around with your machine. Back off the overclocking buddy.