I once had to reinstall the system from scratch on my father's old laptop. Everything went pretty quickly, but when it came to activating Windows, the adventures began. I tried several solutions, and finally turned my attention to kms auto - nothing superfluous, the interface is simple, everything is in place. The site looked pretty basic, but it coped with the function. From my experience, the main thing is to be careful and not rush, then everything works as it should.