Technically it depends on the license you have. If you purchased an OEM license then it's tied to the hardware. You used to be able to call up and say my motherboard died to get it reset but I don't hink that's a thing now.
Have used this before. To help confirm, I'm still using what was an original Win7 retail copy which I upgraded to 8.x and now running 10.Open command promo as admin and run.
slmgr /dli