Summary
If you need to reinstall Windows but can’t find your product key, this article will teach you where to look and how to locate it.
The answer could be as follows:
- Printed on a sticker that serves as a Certificate of Authenticity
- The Windows Registry is where this information is kept.
- UEFI firmware (Unified Extensible Firmware Interface) is embedded in the PC.
You won’t need your product key if you’re already running Windows 10 and want to reinstall the operating system. Windows 10 will recognize that it has been reinstalled on a previously activated PC and will automatically reactivate after the reinstallation.
More details refer the below link:
