FAQs - Solutions to problems
Touch screen does not respond at all
"USB not recognized" message appears on screen, or touch screen beeps but does not operate correctly
Touch screen not working on waking up PC
Touch produces erratic responses on screen
Touch screen behaves erratically after calibration (light interference)
Touch screen does not respond at all
When you connect power to the unit, and each time you touch the screen thereafter, the touch screen should beep. If not, check the following:
(Note: This does not apply to USB-powered models.)
- The power supply unit is the one provided by NextWindow.
- The power supply unit is plugged into the mains electricity supply.
- The mains electricity supply is switched on at the wall.
- The 12 VDC cable is connected to the touch screen.
“USB not recognized” message appears on screen
Or, touch screen beeps but does not operate correctly
This may occur if you connect the USB cable before connecting the power. To fix the problem, disconnect the cables, and then re-connect in the following order:
(Note: This does not apply to USB-powered models.)
- Connect the 12 VDC power cable.
- Connect the USB cable.
The computer should then correctly detect the USB device (the touch screen).
Touch screen not working on waking up PC
This can occur due to the power management features of the PC.
To fix the problem in Microsoft Windows, proceed as follows:
- In Control Panel, select System then go to the Hardware Tab and select Device Manager.
- Expand the Universal Serial Bus controllers.
- Double click on each USB Root Hub to display its properties.
- For each hub, select the Power Management tab.
- Make sure that "Allow the computer to turn off the device to save power" is deselected.
- Click [OK] to save the setting.
Touch produces erratic responses on screen
This can occur if the touch screen has not been calibrated correctly. To fix the problem, re-calibrate. If you cannot calibrate the touch screen, contact NextWindow Technical Support.
Touch screen behaves erratically after calibration - light interference
This can be caused by interference from a nearby light source, such as a halogen light.
Background light interference can be filtered using USB Config as follows. Go to the Cameras tab. Select the frequency of the mains electricity in your country. For example, Europe is 50 Hz and North America is 60 Hz. This will synchronise the optical sensors with the lights and prevent interference.
Also, tilting or turning the screen away from the light source can reduce the effects of lights.
See also our Ambient Lighting page.
Other issues
If none of the solutions helps with the problem, please contact support@nextwindow.com, making sure you list the serial number and model number of the touch screen.