Force restart an iPad with Home button such as iPad Air you need to press and hold both the Home and Side or Top buttons for at least 10 seconds untile you see the Apple logo. And then tap the x sign upper left corner to remove the app. With a mouse select Start then select Calibrate the screen for pen or touch input Press Tab until you select Reset and then press Enter.
Keep holding them until you see the recovery mode screen.
After updating to iOS many people complained that iOS update bricked their iPhone iPad and couldnt be turned on. Keep holding them until you see the recovery mode screen. For instance the latest update to v1709 users broke the touch screen on some devices and Microsoft quickly released a patch the next week via Windows update to fix the issue. You need to firstly tap the Volume Up button.
