Computers are like air conditioners. They work fine until you start opening windows.
I wrote about this before. And I will talk about it again. Back up your computer. What do I do? I have an external hard drive with it’s own case. And I back up my “Documents and Settings” folder right from the “C” or main drive. This contains all your personal folder, internet passwords, Microsoft outlook data files, emails, etc, etc.
I actually have the exact same hard drive that is in my computer. And I actually back up the entire hard drive. This way if my computer ever goes down, I just plug my hard drive into another computer and I am back up in literally seconds.