How to replace the key in Win10 system

  
                

If the Win10 installation process does not have a secret key, you can use the trial key to activate it (Win10 System Activation Tutorial). If you have the secret key, you have to change the key. How does Win10 change the key?

Right click on the start and you will see the control panel. click to enter.

[found in the Control Panel to add functionality to Windows Tchnical Preview] to enter
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