3. Troubleshoot the Drivers. If the simple steps above don’t solve the problem, run the Hardware and Devices troubleshooting tool. Open Control Panel and head to Troubleshooting > View all
billsey said: Look for anything in Device Manager that's flagged, even if it's not obviously connected to the touch screen. The touch screen digitizer sits behind an internal USB port, so an issue with that USB hub could easily cause these types of symptoms. I just checked and there is nothing at all in the device manager that is flagged. SoWv.