crashes and wont let me log in... i'm not shure what a summary is ;3

crashes and wont let me log in

What I expected to happen was...:
i thought i would log in as normal but now i have windows 8 i cant even log in.

What actually happened was...:
i pressed log in and it crashed

Steps to Reproduce:
1. i typed in my login
2. ... logged in
3. ...and it crashes!