How to get rid permanently of annoying Windows 11 Watermark

If you always see an “Activate Windows” watermark at the bottom-right corner of your system's desktop it means you haven't activated your copy of Windows 7 - Windows 8 - Windows 10 - Windows 11 once the 90-day trial period is over. This watermark usually says “Activate Windows - Go to Settings to activate Windows”.
In this video I will show you how to get rid of this permanent watermark !!!