Reactivating Windows after a hardware change - Microsoft Support
https://support.microsoft.com/en-us/windows/reactivating-windows-after-a-hardware-change-2c0e962a-f04c-145b-6ead-fb3fc72b6665
WebTo activate Windows, you'll need either a digital license or a product key. To find out which you need, see "What activation method do I use, product key or digital license?" in Activate Windows. Then, use the following info to help you successfully prepare for a hardware change and reactivate Windows.
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