In case you are facing issues with your PC not prompting you for “allow screen projection”, when you connect PC to phone, you can go to Control Panels——-> Devices & Printers on your PC and remove your phone, if already present.
Now launch the “project my screen” application on your PC, connect your device to PC with USB cable and it will ask, if you want to allow screen projection.
If the solution 1 doesn’t work for you, try uninstalling and reinstalling your phone drivers on your Windows PC.
Connect your phone to your Windows PC using a USB cable.
On your PC, go to Start and open Device Manager.
Click Universal serial bus devices, right-click your Windows Phone, then click Uninstall. Make sure that you uninstall any Windows Phone devices that appear in this list. (You may need to restart your PC.)
Disconnect your phone from your PC, then reconnect it. It’ll automatically reinstall the correct drivers.
For many similar useful Windows Phone tips and tutorials, browse our “Tutorials & Mods” category from top Menu or click here.