The touchscreen function of my Tormach-supplied touchscreen monitor (Monoprice P/N 15482; Tormach P/N 35575) has suddenly stopped working. When I run ADMIN TOUCHSCREEN, I get the calibration program (touch here, then here, then here, then here), and the system senses each touch by activating the next, but after touch #4 I am back at the main PP screen with touches still not recognized. Is there some sort of hard reset for the touchscreen that might help?