i bought a new Windows 10 computer when it was first released. It was actually built before the lease so while it was sold as a Windows 10 computer it installed later. I had some problems with the Windows 10 software, and finally had to do a reset. I went back to Windows 8.1, which I have used for the last couple years. I figure the bugs are out of Windows 10, and want to use it, but don’t see it still exists in program files. I downloaded the magic key program and don’t see a listing for the I’d either. How do I get Windows 10 back.