Since July I have tried numerous times to download and install Windows 10 but to no avail. The process gets about half-way through and the computer revert to Win 8.1.
I've downloaded the instlalation files to a flash drive and am about to do a clean install; reformating the hard drive, etc. My concern is with the product key for Win 8.1. I bought the machine with Win 7 installed and a free upgrade to Win 8.0. I can't find a product key for Win 7, Win 8, or Win 8.1, and one site on the internet says that I will need one to activate Win 10 after a clean install.
Does anyone have a solution? A way to find the Win 8.1 product key? or whatever I need to assure I can use Win 10 after the free install?
btw, I'm a new user.