Remove Watermark 2.2.6 is a software tool designed to remove watermarks from Windows operating systems, particularly from Windows 8.1. A watermark is a notice or image that appears on the desktop, usually indicating that the operating system is not activated or that it's a trial version.
: It alters system registry entries to trick Windows into remaining in a permanent "trial" or "genuine" state. removewat 226 windows 81 link