I have a T420 Lenovo notebook
Win7 Pro 64 bit
I turned it on today and it went into Windows automatic updates.
After a while the screen went blank (black)
I have a cursor and it moves around
I can CRT, ALT, DELETE - and then reboot.
I can get into safe mode
I did a restore but the only available point was at the windows update time.
I did the restore and have the same result.