Roughly 3 weeks ago I build a new computer for my self, my old one was kind of of slow and was a pre-built from HP. When I built a new pc I had a little trouble with activating windows but after a while I got it to activate using my old product key, when I got on my computer today however I saw the activate windows water mark. I had went to settings and checked my activation status and it said that I was using Windows 10 Enterprise and that there was no product key. The problem is I never installed Enterprise edition, on my old and new computer I use Home. Not sure if it matters or if it is just a coincident but I just finished setting up the security on my computer today, I don't think there is any correlation, however in case you were wondering it is Trend Micro. I really would prefer not to do a clean install because backing up my files ends up taking hours.