I think I already know the answer to this, but I wanted to make sure. I'm working on a build and I'm considering saving money by getting a cheaper SSD than I've been wanting to get for a boot drive and some programs and just taking the hard drive out of my old desktop. If I was to keep the hard drive and someone got the old computer, would they have to acquire a new product key to activate Windows or would the product key on the sticker work? When I upgraded it from Windows 7 to Windows 10 I put in the product key on the sticker and it activated Windows 10 after upgrading, but as I said I'm just wanting to make sure.