I have an old HP Pavilion that has been through some things. It was a family pc so it has had many users and I don't necessarily know everything on it. I went off to college so I'm sure it wasn't taken care of and there should be plenty of malware on it. While I was away my uncle changed the OS from Windows ME to 2000 Professional. Ive recently tried to use it but it seems like the CD-Rom drive no longer works and I cant even load the various protection programs from a cd I created. Can anybody tell me whats wrong???