Many times when you installed a new copy of window in your laptop or desktop after a couple of days your window will show the error of genuinity that is This Copy Of Windows Is Not Genuine and this will replace the wallpaper of your desktop with the black screen.
We can easily get rid of this error with the help of the CMD command.
Step 1: Run CMD as the administrator. Search the CMD in start search and right click on it and select Run as administrator.
Step 2: Now type a command “SLMGR -REARM” without quotes and hit enter then after you will see the message box command completed successfully please restart the computer to apply the changes.
After this restart your computer and put the theme on your desktop it will not disappear and you will not see that error again.
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