With the release of Windows 10 creators update, I just read (softpedia article. cannot post the link) I can now activate Windows 10 using Windows 7/8.1 OEM keys/serial. So is it possible to clean install Windows 10 on my desktop and used my Windows 7 Pro OEM serial without messing with modded BIOS (to add SLIC) and xrm-ms files? If that's not the right way of doing it, can someone please tell me who to make it work? Thank you so much! Edit: this is what is written in the article Basically, this means that if you clean-install the Windows 10 Creators Update and you own a Windows 7 or 8.1 OEM product key for your computer, you can easily activate the system by simply entering the original license in Settings > Update & security > Activation.