Mentioned in Gooneys Seagate thread, I installed a new 1TB hard drive into the laptop recently, I said at the time it didn't accept the Product Key and I had 30 days to register etc. My wireless printer after working initially is now telling me it won't run on this OS. After another attempt to register MS are saying this OS cannot be used for a clean install, which is what I did, but for an upgrade only. Now I remember why the 7 disk was cheap at the time. So question is, if I can find the original disk with the Vista OS will it re-install and enable me to then upgrade with the 7 over that? Or am I better off buying a 7 disk with code and clean install off ebay for £35?