I have had my Win10 key from back in the day when they were given out freely upon upgrade from 8 and 8.1.
As of this week, I have completely/fully upgraded my entire pc system to a new pc build and can no longer use the key for windows as it doesn't recognise the system. The old system is going to be put out to the pasture/reinstalled and re-purposed and won't be using this key anymore. Is there any way I can activate the key on the new system?