It's my understanding that there are two parts to a touch screen monitor. 1) the video cable, and 2) the USB cable.
With only the video cable connected, the monitor will function as just a normal monitor. The touch functions are controlled via the USB connection.
Assuming the USB ports are working (you can test using another device), the cable or monitor are likely faulty. Try connecting the monitor to another comupter, that will confirm a monitor or computer issue.
With only the video cable connected, the monitor will function as just a normal monitor. The touch functions are controlled via the USB connection.
Assuming the USB ports are working (you can test using another device), the cable or monitor are likely faulty. Try connecting the monitor to another comupter, that will confirm a monitor or computer issue.