Hi, I left on a work trip and left my computer with my cousin. He called me and asked to completely restore the computer due to viruses. I said yes, but he used the Windows anytime upgrade cd without reading the box. Now I get the message "invalid product key". Whenever I try to change the product key to the one that came on the computer, it reverts back to the wrong key and will not let me change it. What can I do to get the original key working again?
Thanks,
Bitz