If you’re having trouble connecting to your wireless display, try the following to fix things:
1.Make sure your Windows 10 device supports Miracast. Here’s how to check on your PC: Select the Start button, type Connect, and then select Connect from the list of results. In the Connect app, the text will tell you if your Windows 10 device supports it. To check on your Windows 10 phone, on Start , swipe over to the All apps list, and look for Continuum . If Continuum appears in the All apps list, your Windows 10 phone supports Miracast.
2.Make sure Wi-Fi is turned on. To do this on your PC, select the Network ( or ) icon at the far right of the taskbar, and then check the Wi-Fi quick action. On your Windows 10 phone, swipe down from the top of your screen to open action center, and then check the Wi-Fi quick action.
3.Make sure the display supports Miracast and verify it’s turned on. If your wireless display doesn’t, you’ll need a Miracast adapter (sometimes called a wireless display box) that plugs into an HDMI port.
4.Make sure your device drivers are up to date and the latest firmware is installed for your wireless display, adapter, or dock. See the support info on the manufacturer’s website for instructions, or search Microsoft Store for your manufacturer’s app to help you.
5.Restart your PC or phone and the wireless display or dock.
6.Remove the wireless display or dock, and then reconnect it. To remove the device, open Settings , and then select Devices > Bluetooth & other devices . Select the wireless display, adapter, or dock, then select Remove device. After that, try reconnecting.