I bought a new in the box tablet Dell 7212 It has windows IOT 10. I don't have the product key. And neither does the person I bought it from. They were left over from a company that had bought 30. Mine is number 2 of 30. Anyway I cant activate windows. Can i just download and clean install of10 pro or 11 and use the new key to activate the new windows install?  This tablet is brand new and is awsome. And I got it cheap so I don't mind spending a little money on it. Help please.

Terry