I have a Compaq laptop with windows XP about 5+ years old. Windows locked up a week ago so I had to cold stop the computer. After I restarted it, it did it again. I'm unable to remove any programs because the screen goes black and it freezes. I went to microsoft to check for up dates and it recommended an update. I can't install the update because it freezes and locks up, screen goes black so I the only option I have is to shut it down and try again. I've also noticed that if I leave it setting for a while, it normally goes into sleep mode. All I had to do was move the mouse or press any key and it would start up. But now it won't do that. It freezes up. I have to shut it down and restart it. If I can't install updates, remove/uninstall programs, what can I do?