This question is an exact duplicate of:
I have a 2 screen setup with windows 8 pro, one is a normal monitor and the other is a touch screen. When using the touch screen to do anything it moves the mouse pointer to that location and then I have to move it back across when switching to my main monitor. It doesn't make much sense for the touch screen to move the pointer as it is irrelevant to the way you interact with the screen. I looked through the touch settings and couldn't find anything, is there any way from within windows to stop this?