Last night I was playing around in CompizConfig Settings Manager with some of the 3D effects, even though my little netbook can only handle so much. I clicked something (probably Bicubic Filter), and my screen went black with some green outlines were window bars are supposed to be. I went to restart and my screen is still unusable. I can't see the menu or anything on it, but if I could just uncheck that stupid box, I think I'd be good. Now I'm getting errors about the greeter (I'm assuming login screen) not being able to start up. I could re-install Mint, but would rather make an attempt to salvage some of my data first. I'd greatly appreciate any suggestions.