Windows 10 came preinstalled on my computer, how do I find the product key?
Press Windows key + X
Click Command Prompt (admin)
Enter the following command:
wmic path SoftwareLicensingService get OA3xOriginalProductKey
Hit Enter
The product key will be revealed, copy the product key
Click Start > Settings > Update & security> Activation > Change the product key then enter the product key then click Next to Activate
or;
Press Windows key + R
Enter the following command in the Run line:
ms-settings:activation
Hit Enter