To remove the "Activate Windows" watermark permanently, you need to activate your Windows operating system with a valid license key. Here are the steps to activate your Windows operating system:
Go to the Start menu and click on the Settings icon.
Click on the "Update & Security" option.
Click on the "Activation" option in the left-hand menu.
Click on the "Change product key" option.
Enter your valid license key and click on the "Next" button.
Follow the instructions on the screen to complete the activation process.
Once you have activated your Windows operating system with a valid license key, the "Activate Windows" watermark should disappear permanently. If the watermark persists after activation, try restarting your computer or contacting Microsoft support for further assistance.
