Touchscreen quit working (Dell Inspiron 13 7000 series)

I have a Dell Inspiron 13 7000 series laptop.  It is 11 months old.  It has worked fine since day one until today.  Today the touchscreen quite working.  All the helpful hints from the internet do not work.  Some ask me to click on the TABLET PC icon in the Control Panel, but there isn't one.  Some tell me to turn off and back on the HID compliant Touchscreen control in the device manager, but there isn't one.  I am running Windows 10 which came installed from the Dell factory.  What else can I try (that I really can try)?