So I ordered ASROCK Z370 Extreme4 motherboard... Right now I'm running windows 10 because I did the accessibility update for windows 7... But I only own windows 7 key and from what I see ASROCK Z370 Extreme4 only has win 10 drivers... My question is when I swap out my motherboard can I still put fresh win7 on it? Will it work? And if it works I would just do the update to win10 again and get all the drivers.... Or I need to buy win10 key?