I have a home build a friend sold me, works fine but it's an unauthorized copy of win7 pro. I want to know if there will be any issues coming from replacing the unauthed version to an authorized version that I purchase...even if it's Win7 Home Premium...does it have to be Win7 Pro, or Win10 Pro? Thanks so much. I know just barely enough to be dangerous. ;-) (PS, It's an i7 processor)