I recently cloned one of my hard drives as a back up drive, also i had installed a new motherboard.. Now after the new motherboard windows was deactivated and needs to be reactivated but it says my key already in use on another computer.. how do i fix this?
More about :fix windows deactivation problem error code 0xc004c008
Where it tells you it is deactivated, it should give you a local phone number to call. This will 'probably' get it reactivated. Failing that, you'll have to call and talk to a human.
It's saying 'in use on another computer', because Windows treats the motherboard as 'the computer'. When it was originally activated, it knew the old motherboard. Now, trying to activate again, it sees a new one.