Windows black screen after changing drivers on Ubuntu

Slyth

Honorable
Apr 2, 2013
1
0
10,510
I have my Sony Vaio set up in a dual boot with windows 8 and Ubuntu 12.10. I decided to install the radeon drivers for Ubuntu but that didn't go well and I gave up. Now whenever I try and pick windows 8 in Grub it loads a black screen after the little circle loader. I am not sure what to do and I can't lose any of my data on windows. I don't care much about Ubuntu though. Any help is appreciated greatly!