I put in a DVD, used Brasero to copy the content to an image file, then I
went outside. When I got back home the screen was black and nothing could be
done. I tried to enter the F1+ctrl+alt, that didn't work either. So I force
shutdown the computer and turned it back on. It seemed fine, but when I
logged in the screen turned black again.
Oddly enough it is possible to login as guest.
Anyone experienced similar?