Hi guys. I'm new here, so hoping not to tread on any toes ;-) My query is on behalf of a friend who's not particularly computer literate, and I'm hoping some of you experts can help us. He currently has a new machine with WIN8 on it. He prefers the WIN7 on his old machine, but loves the speed of his new hardware. The WIN7 on his old machine was installed as an upgrade from WIN XP (which I understand is basically a clean install). His old machine was last used about a month ago. It still has this WIN7 on it (it's not been uninstalled and deactivated via Microsoft). Seeing as his WIN7 is, as far as MS is concerned, presumably still activated on his old machine, will he have to get it uninstalled and deactivated in order to be able to reuse it on the new machine? Will his WIN7 upgrade disk even run properly as an 'upgrade' on a machine with WIN8 already installed (rather than, say, Vista or XP)? Basically, my head is spinning wondering if there's effectively a way to get WIN7 off his old machine and activated on his new machine using only a WIN7 upgrade disk and, I believe, an XP install disk. Is it a case of uninstall and deactivate WIN7 on the old machine, install XP on the new machine, and then run the WIN7 upgrade disk on the new machine's fresh XP installation? Any clarification MUCH appreciated! (and apologies if this is a common query). Regards, Jon.