1.Open Device Manager (Select This PC->Right Click->Properties->select Device Manager at top left ,or search Device Manager from Charm Menu(menu at right side in w8/8.1) )
2.Click Human Interface Devices
3.Right Click HID-Compliant touch screen
4.Click on Disable
To Enable ,proceed same way ,click on Enable in the 4th step
2.Click Human Interface Devices
3.Right Click HID-Compliant touch screen
4.Click on Disable