If you reinstall Windows 7 frequently, it is handy to keep an image of the installation DVD as a backup. So here’s the direct “official” download links below from Digital River servers. The files are bootable images that vary in languages and 32/64 bit option to choose:
Let’s see the most advanced ULTIMATE edition of Windows 7 Service Pack 1 Media Refresh edition – click the links for downloading directly:
English x86 http://msft.digitalrivercontent.net/win/X17-59463.isoEnglish x64 http://msft.digitalrivercontent.net/win/X17-59465.iso
French x86: http://msft.digitalrivercontent.net/win/X17-59477.iso
French x64: http://msft.digitalrivercontent.net/win/X17-59479.iso
Spanish x86: http://msft.digitalrivercontent.net/win/X17-58877.iso
Spanish x64: http://msft.digitalrivercontent.net/win/X17-58879.iso
Download and burn. If you have a difficulty running 30 days trial, you can always extend. Or buy it.
I also recommend to explore Windows Loader.