I have a surface pro 2. My power button is set to turn the display off. After the display turns off after pressing the power button, if I touch the screen's surface it turns the display on again. Very annoying if I want to walk around holding the device. Why does this happen? How do I prevent the touchscreen from being able to turn the screen back on? If important, I use the display off function because the device is being used to stream videos. So the device is always on.