I used to have a valid copy of windows 10 pro, that changed when i upgraded my cpu and motherboard. i found it pretty annoying to not have a valid copy of windows so i just bought a Windows 10 Home product key. The problem is that when i try to change the product key i just get error messages and nothing seems to work. I think the problem is that my current copy of Windows is the Pro version and the product code is for the Home version, I have tried to download windows 10 but every time i try to install it i keep getting the pro version. If you know how i can downgrade to the Home version or anything else that would fix this i would be a happy man once again, ty