I was wondering, since I myself didn't purchase a product key for my windows 10 and instead upgraded from windows 8.1 from when MS was offering it for free, if I would be able to keep my copy of 10 had I changed from am3+ to am4 and reinstalled windows 8.1 off of the CD-ROM i bought it on. I linked my MS account to my digital copy of 10 and just want to make sure it'll stay surfaced when I upgrade my rig.