So a few days ago i built my pc and today i got OEM windows 10 pro for it (from kinguin) and i wanted to install it on my usb from my mac, and like a dumb*ss i ended up intalling it ON my mac. And now, when i try to put a background on my new PC. It tells me to activate windows. Well thats what ima do. Im gonna get another key. BUT should i get a retail key or an OEM key?