How To Deactivate Windows 10 Pro Product Key. To activate Windows 10 with a previous product key use these steps. Five months ago I bought a new HP Pavilion Power Ghost laptop with Windows 10 Home OEM installed.

Copy and paste the following command line in Command Prompt window and hit EnterIf you buy or find the activiation key for Windows 10 Pro you can replace Windows 10 license key in the command line after slmgr ipk. Once this command will execute we need to restart the system will be in an Unlicensed state unless a new product key is installed. Digital license is saved on the UEFI firmware or BIOS chipset of the motherboard.
Click here and copy the Windows 10 text activation code.
To use the Command Prompt to find your Windows 10 product key ensure you have administrative privileges on your computer. In Command Prompt enter the following command line and press Enter. Now with this activation method you can activate all Windows 10 versions. Answer 1 of 3.

