Windows xp professional

Yes, got to www.google.com and type in "microsoft genuine advantage diagnostic tool" download and run it. If it shows not genuine, click on "resolve."

Are you sure that you have a genuine copy of windows? It sounds like you may have been a victim of software piracy. In other words it sounds like someone sold you a computer with a pirated version of windows. If that is indeed the case, you'll need to call Microsoft and plead your case. If you can convince them that you are not the pirate, they will usually validate your copy for you.

Sorry, fixya experts are not permitted to contact customers about a problem through email. Keep posting to this thread until we get it fixed.