Download Windows 7 if incase you lose your recovey disk and need to reinstall windows 7 on your PC you can get this genuine copies to activate it after installation using the product key you got with your computer.
http://www.filesonclick.com/softwares/microsoft-windows-7/
Download Microsoft Windows 7 Copies For Free These are now available for those who currently have Microsoft Windows 7 with Genuine Activation Keys. These are the legitimate downloads, full ISO image to burn to a good quality blank DVD using any good image burning program such as ImgBurn or the like.
if you need more help on how to install windows 7 on your pc simply follow this..