What happens if my Certificate of Authorisation (COA) is damaged or has to be replaced?
You will need to go back to your reseller/manufacturer or the place where you bought your PC and request a new COA. You will then need to peel off the old COA from your PC (even if it is in pieces) because it will need to be sent back to Microsoft before the replacement can be ordered. The replacement COA will then be sent back to the reseller/manufacturer or place of purchase, who will then stick it back on the chassis of your PC.
