Download Updated Miracast For Windows 10 -

Miracast uses Wi-Fi Direct technology. Even if your computer uses an Ethernet cable for internet access, you must keep the physical Wi-Fi card enabled on your computer. Make sure that Airplane Mode is turned off. 3. Change Your Network Band

Miracast relies on your Wi-Fi and Graphics drivers. If they are outdated, the feature won't work. : Must support WDDM 1.3 or later. download miracast for windows 10

To use one: