Topic: General issue

Is the hard drive you are installing windows 10 to have a Windows 7 or 8 OS? If Windows 7 you can pull the key with Produkey. If Windows 8 and the computer was an OEM like HP or Dell the key is embedded in firmware.
If the Computer has Windows 7 or 8 currently installed you can upgrade to Windows using the Media Creation Tool as shown in the link I posted. Run the MCT and select "Upgrade this PC Now"

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