Sometimes when I exit LFS my screen just goes completely black. I don't even get to see my desktop. It happens as soon as I click exit. It's happened about 4 times now and when I manually turn the PC off and restart Windows, I get to the login screen but cannot see the login dialog box at all... I can basically just see the background.
If I enter my password and press enter (without seeing anything but the background) it does login to Windows. Once I get into Windows all I see is part of my background, but no icons or anything. I do ctrl + alt + delete and I can't see the task manager, or nvidia control panel, etc. All I see is the background... To fix this I need to boot into safe mode and do a system restore.

Any idea's what is causing this? because it really sucks. It doesn't happen all the time, but when it does it is a real headache.