You will need to call them to reactivate. This is how Microsoft has decided
to operate as they don't care about anything but profit.
You will talk to someone in India who has no idea what they are doing and
you won't be able to understand them and they won't be able to understand
you. They will probably hang up on you as they did me, but as far as
Microsoft is concerned, tough luck.
Here is the link to return Vista:
>> new copy just because I upgraded my computer! Thank you for your help