Is it possible to restore windows to a license after installing a pirate?

Question

Microsoft

I bought a computer about a year ago. Licensed Windows 8 was already installed on it.
What I was most afraid of happened: after a while, "blue screens of death" began to appear.
A friend helped me reinstall on Windows 7. As I understand it, on a pirated version.
Now there is a need to install Windows 10. I have kept the old key.
As I understand it, I first need to install win 8, enter this key and then upgrade to win 10. Correct?
Will it work? Or no longer return to the license?
UPD: It turned out to install. The license was entered automatically.

Answer 1

Yes, it will.

Answer 2

You install a pirated Windows 7 -> you crack it -> you upgrade to Windows 10 (until some July, free licenses for the Pro version) even from the transition of the pirated Win7. PROFIT!!!