Well, my windows works fine until just now, it appears a message Windows: No CD
and I just ignored it, then I restart my computer and login to my user and it appear a black screen, no start menu or etc, but it do have Document this folder comes out so I still can online or play games w/e, anyone can tell me what happened to my computer?
Btw, my window is Vista...

try logging on as administrator and create a new user...if that works, delete the old user. zeroth

dude, every user the same