This may be too late But, I have done this. I downgraded win 7 back to Pro. Then used the windows 10 update assistant. It also gave me a free upgrade to windows 10 about a month ago. Very easy
Why is it no one likes Intel?
Mine is always work in progress. I think about the end of the year ill change the CPU and mother board.
https://valid.x86.fr/8ar5km