The Activate Windows watermark is a message that is displayed on the desktop of a computer that is not running a genuine copy of the Windows operating system. This message is typically displayed in the bottom right-hand corner of the screen and can be removed by following the steps below:
1. Click on the Start button and then type "regedit" into the Search box.
2. Press Enter on your keyboard and then navigate to the following key in the Registry Editor: HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\SoftwareProtectionPlatform
3. In the right-hand pane, locate the entry for "SkipRearm" and double-click on it.
4. Change the value from 0 to 1 and then click on the OK button.
5. Close the Registry Editor and then restart your computer.
After following the steps above, the Activate Windows watermark should no longer be displayed on your desktop.