What is Windows Genuine Advantage Validation ?

Its a process that checks whether the cd key for the version of windows that you have is genuine or not. If its not you can't change your background and have a notification or watermark if you will that won't go away until you system restore (which reverses it) or get a genuine copy. You also won't be able to download certain things which require validation from Microsoft and you also won't be able to use automatic updates. If your windows is genuine then you can use automatic updates download from microsoft and won't have a watermark bugging you to go genuine.

Hope this helps - Jords

It's a simple process that validates the copy of Windows running on a specific machine to be genuine. Once completed, you will have access to all software updates to keep your OS "safe".

It gives Microsoft the genuine advantage of not letting you run a copy of Windows you didn't pay for.

Dear friend, just download windows genuine maker from following link. I tested myself and it is really 100% working, and you can update your windows also time to time. It is very easy and the help file of that link will guide you how you will make your windows genuine. Thanks enjoy it.