Desktop Window Manager Session Manager is a service that renders transparent windows, live task thumbnails, high-resolution monitor support, window layering and much more on your PC. Sometimes this function slows down your computer and you might want to switch it off for a while. In this article, we explain to you how to disable the Desktop Window Manager.
To disable the Desktop Window Manager Session Manager on Widows 7 (if you don't use Aero), follow these steps:
1) Click on the Start button and type services.msc in the search field. Then, press Enter.
2) In the Services window, look for the following entry: Desktop Window Manager Session Manager.
3) Double click on it and set the Startup type as Disabled.
4) Finally, click OK to save changes.