That is what I remember. I think I was in front of the computer and it took some minutes. I installed W7 Pro and I immediately upgraded to W10, without adding software, apart from the Internet Browser and things like that. But maybe I am completely wrong, I apologize if this is the case. So basically, if I activate W7 with the Daz Loader and I upgrade to W10 from the Microsoft Media Creation Tool, I will keep the activation (only that it is better and faster with the clean install) Thanks Enthousiast and whitestar99!