Windows 8 Professional - Update [from Windows XP, Windows Vista, Windows 7] I think, having even asked me about it the answer will interest you After Microsoft Free Contact number: 09 70 01 90 90 so I had the answer The versions either in the box or download Version (DVD) sold here can only make updates for Windows systems from previous versions. To install Windows 8 on a new PC, or on a desktop PC with a new disc, or even a laptop PC with a Windows no longer fontionne, it will put the hand pocket and buy an OEM version (about 150 euros for the normal version, not the pro) So here we are far from promos that were made with windows 7 or you could buy for 50 euros an OEM version, that is to say has a windows install from scratch There you are Averis. We read a little of everything and its opposite, but I got the response from Microsoft If anyone has evidence to the contrary I'm interested Thank you