Ubuntu 12.04 Freezes after trying to login Ubuntu3D mouse stuck on right side of screen

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http://askubuntu.com – So I'm running 12.04 using WUBI and whenever I try and login using the normal Ubuntu option (as opposed to Ubuntu2D) my mouse jumps to the right edge of the screen and everything just freezes. This only happens after I install a few things like dropbox and updates (tried just doing the essential without the recommended still did it). I think it's possible it's a graphics related problem as I was having some trouble earlier with it. I'm using an ATI 6950 with dual monitors and using Catalyst control centre. Also if it matters at all, whenever I wanted to revert back some things, I've just copie (HowTos)