Use the following steps to disable the touch sensitivity of a touchscreen: 1  Click Start and then Control Panel. 2  Click Hardware and Sound and then Pen and Touch. 3  In the dialogue box that opens, select the Touch tab.4  Clear the Use your finger as input device checkbox.OLUTION. Use the following steps to disable the touch sensitivity of a touchscreen: 1  Click Start and then Control Panel. 2  Click Hardware and Sound and then Pen and Touch. 3  In the dialogue box that opens, select the Touch tab. 4  Clear the Use your finger as input device checkbox. 5  Click OK to confirm and close the dialogue box.