Almost all Windows 8 tablets come with decent hardware and one or more USB ports. These USB ports are helpful when you are in good mood to play some serious games that are not optimized for multi-touch displays. To avoid accidentally touching the screen, you may want to temporarily disable the touch screen (touch input) after connecting the keyboard and mouse to the tablet.
When the touch screen is in disabled state, the display will behave just like any other normal non-touch display. Windows 8 provides a simple way to temporarily disable the touch screen. To disable or enable the touch screen follow the steps given below.
To disable the touch screen:
Step 1: Switch to Start screen. In the Start screen, tap on Control Panel tile to launch the Metro style Control Panel.
Step 2: In the left pane of Control Panel, tap on More settings to open the good old Control Panel.
Step 3: Here, navigate to Hardware and Sound and then Pen and Touch. Users who have enabled small icons in Control Panel can directly tap on Pen and Touch option.
Step 4: In the Pen and Touch dialog, switch to Touch tab. Here, disable Use your finger as an input device option. Tap Apply button. You are done. You have just disabled the touch input! From now on the touch screen will not respond for the touch input.
To enable the touch screen:
Step 1: Connect a USB keyboard or mouse to the tablet. Go to Control Panel > Hardware and Sound > Pen and Touch.
Step 2: Enable Use your finger as an input device option. Click Apply button to enable the touch screen.
Method 2: Use this method only if your tablet doesn’t have USB ports
Step 1: Press and hold the power button to shut down the tablet.
Step 2: After shutting down the tablet, press the power button again to switch on the tablet and boot into Windows 8. You should now be able to use the touch screen.
WARNING: Please save all your work before disabling the touch input. Once the touch input is disabled, you will need to connect either a dock, keyboard or mouse to enable the touch input again.