Windows 10: Want to buy genuine Windows 10 Pro

Can anyone tell me please where I can buy official genuine Windows 10 Pro online?

:)

 

Install Windows 10 Pro, on a computer with Windows 7 Ultimate(non-genuine)?

What would be the steps to install a Windows 10 Pro copy buyed from Microsoft Store, on a computer that has Windows 7 Ultimate(non-genuine), without being left any traces from the non-genuine Windows 7?

What would be the easiest way for a newbie on this matter?

Thanks,

Diego

 

Windows 7 not genuine problem

It seems like that's an OEM windows copy, it will do that the every time you reinstall the OS. If you have the key, next time you see the "not genuine windows copy" click it and choose to activate by phone, everything else is pretty straight forward as it explains step-by-step. If it doesn't work, then its highly likely that you got a Pirate copy.

 

Buy W10 then install on non-genuine W7


My computer runs a non-genuine version of Windows 7 Pro. If I buy a legit new windows 10 Pro Retail disk can I upgrade from my non-genuine W7, or do I need to do a clean install of W10 (and then have to reinstall a whole lot of other software)?