To use an iPad as a second screen on a Windows 10 computer, you'll need to use a third-party app like SplashTop.
Activate Display Mirroring: Press and hold down the Home button on your remote, then select Mirroring. Cast from Android: ...
I walk through how I mirror my iPhone screen to my Windows PC using a free app called LonelyScreen. I show how to download it, install it, and connect your iPhone so your display shows right on your ...