My laptop was recentley updated onto Windows 7. It's been going fine until last night when I tried signing onto MSN messenger, the laptop suddenly froze and windows wouldn't work. I can only get onto other programmes like the internet which I mainly use anyway, also on the internet occurs the problem where I cannot watch any videos. Whenever I sign onto MSN the laptop freezes so I have to do a forced shut down. Which could damage my laptop. Can anybody help me?