You might not see the messages until you try to download something from the Microsoft Download Center that requires validation, and validation fails. If the repairs required Windows to be reinstalled, the technician may have activated Windows with a different key than you used when it was originally installed. Repairs. If your PC has been repaired, you might start to see messages on your desktop that Windows isn't genuine.
There are a few common scenarios in which Windows running on a PC might be discovered to be non-genuine during validation.
