1. You need to download and install(after downloading it to your hard disk, double click the file and click "YES") the registry file. You can download here:
Click here to download the registry file.
2. Open this Genuine Microsoft Software site: http://www.microsoft.com/genuine/downloads/FAQ.aspx and on right of the website, below Validate Now tab you will find "Validate Windows". Click that. Validation will takes place and if your windows is validated it will show
Thank you for completing the validation process and for using genuine Microsoft software."
3. It will tell you to download a software. Run that software and it will automatically takes you to Validation Complete Page