After using my television as a second monitor for my laptop (or using the schools projection equipment, I'm not sure which) I've begun to have problems with my computer. If I close the screen, when I reopen it all that displays is a blank screen, but I hear the fans and what not start up. When I boot up, either from properly shutting down or force turning it off after getting no display, it tries to load in 600x800 resolution before realizing there is no other monitor and loads at the appropriate resolution. Im dumb and didn't have system restore enabled. I checked all my display settings and it isn't set to use 2 monitors but I'm still having problems... any help? Please?