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In addition, Microsoft provides an exception path for transferring a Windows License after a hardware change. If you have a Windows product key you used on your PC before the hardware change, enter it by selecting Start > Settings > Update & Security > Activation and then selecting Change product key. To purchase a new Windows license, select Start > Settings > Update & Security > Activation, and then select Go to Microsoft Store. If Windows was preinstalled on the PC, then a new license is required if you have made a change such as replacing the motherboard.
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If you make significant hardware changes, such as replacing your motherboard, Windows won’t be able to find a matching license the next time you start your PC. A Windows license is associated with your PC hardware. You changed the hardware on a previously activated Windows 10 PC. In Microsoft Store, follow the instructions to buy a license for Windows. To buy a digital license online, select Start > Settings > Update & Security > Activation, and then select Go to Microsoft Store. In this case, you’ll need to provide a valid 25-character Windows 10 product key or purchase a Windows 10 digital license to activate. This is the first time Windows 10 has been installed on this PC. If you see error code 0x803F7001, it means that a valid license couldn’t be found to activate Windows on your PC. This can happen for several reasons:
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