Ok my friends computer is saying "operating system not found", she said it just started doing this recently, but its not all the time. If they restart it, after like 10 restarts it'll load correctly. I figured maybe the hard drive is slowly starting to go bad. But I just wanted to check here before telling her to replace it, if its even replaceable that is. Its a laptop she's had since 2002 so not sure if the hard drives in a laptop that old are even user replaceable.