ntdll.dll Crash when changing projects

Not sure what happened. Tried rolling different graphics drivers that fixed a problem with unity before.

When I open unity even after 8 re-installs of 4.6.1, 4.6.2 and I was on 4.5.something before when this first started happening this morning or yesterday. I try deleting the Appdata and the roaming unity caches but it still comes up with all my project data after re install which is weird because my projects aren't in a detectable location for unity. I can work on the game I had open already but cannot switch games.

Tried nvidia 320.49, 337.61 and the newest available to this card 340.52. all get the error. One time I fixed a similar error by moving to the newest driver when I was on 320.49.

I've tried setting everything to application controlled in nvidia didn't work also tried running with force dx11 and run as admin win8 compatibility mode ect.

Updated windows all the way to be sure that wasn't the problem

 

reply pls