Hi Lito Cabuslay,
Thank you for writing to the Dell Community Forum.
Install the Dell OSD Application using this link http://dell.to/1TGTcRa. If the issue still persists, go to Computer> Control Panel> Device Manager> Human Interface Device> Check if USB Input Device has been disabled > Enable the touch device driver if it has been disabled. Once it is enabled, please restart the system.
Kindly get back if there are any further queries.