Unfortunately, Windows 7 does not support the Miracast protocol, and therefore cannot connect to the AirServer Connect the way Windows 10 for instance can. There is a work-around for this however, using the Google Chrome browser. This browser supports the Google Cast protocol and therefore can connect to the AirServer Connect. Simply click the 3 dots on the top-right of your browser-screen and select 'Cast' from the menu. You will be given the option to cast your browser-window or your complete desktop and everything on it.