While I was updating drivers, this one failed the first time it ran.  Subsequent installs of it completed 'successfully', but since then I'm unable to calibrate the touch screen.  I think I might be able to solve it if I knew what to 'uninstall' via device manager, but I'm not sure which driver I need to uninstall.  I'm hoping an uninstall and a clean install of a working version of this driver would solve it.  Maybe I'm just not calibrating it correctly but I'm following the instructions.  When I get to the calibration screen, it doesn't recognize my touch when I push on the crosshair - nothing happens.  Thanks and Happy Holidays.