Plug in Laptop to Monitor, Check INPUT using the button on the back of monitor or remote.
Toggle your sound in the bottom right corner to be RealTech for the computer audio, and the other is for the Display.
This is a newer Monitor, so follow these directions for the Microsoft Wireless Display Adaptor that is plugged into HDMI 2 on the back.
Watch this video for details.
1. In the bottom Right “Action Center” choose Connect
2. Make sure TV is on HDMI 2
3. Microsoft Display CE - name of connection