Cannot install Windows 7

[RICO1948]

My computer crashed and I tried to do a clean install of Windows 7. But, my ID number does not work so now I could not register because I was using a Windows 7 Upgrade disk. I tried using an upgrade process mentioned in one article, but that did not work. Do you have a workaround? Or will I have to install Windows XP?

[Austin]

If you're using the upgrade version of Windows 7 on a computer without an operating system installed, you might not be able to activate this type of installation. The upgrade version requires Windows XP or Windows Vista to be installed on the computer to activate Windows 7. During setup, you need to leave the product key box empty. To activate Windows 7, go to the Microsoft Support website.