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1. Error message when opening View Touch: No video capture device was detected on your system. 

* Check and make sure the digital light sensor is connected to your computer’s USB port (the green light on the
digital light sensor indicates a good connection). 

* If your View Touch is already running, do not double click the icon on desktop to reopen it.  Use the mouse right
click to maximize the View Touch icon at the bottom of the task bar. 

* If you use a USB extension cable, make sure it is specified for the length that you extend it to.

2. Can not see all the calibration dots: 

* If one of more of the dots at the edge or corner is missing, you may need to adjust the digital light sensor angle or increase the distance between digital light sensor and the screen in order to view the entire screen. 

* If some dots are covered by white color and cannot be seen, it is cause by the lighting problem.  Try to dim the lights and reset.

3. The cursor is stuck to the edge of the screen:

* Check if there is any reflective material (such as metal frame) or some lights (such as the indicator LED).  Cover them if any. 

4. The cursor is stuck in the middle of the screen:

* Check if there is a bright spot caused by the projector.  Adjust the angle or change the fabric of the screen to avoid this kind of problem.

5. Can not see the guiding light: 

* The guiding light is weak.  It takes a little while for your eyes to get used to it.  It is more visible in dimmer room and on the screen color that has good contrast to the red.

6. The mouse control function is not sensitive enough:

* Check if the ambient lighting condition is changed. 

* Check if the batteries need to be replaced. 

* Adjust the sensitivity bar to optimize the performance.

7. The View Touch is not sensitive on part of the screen: 

* Check if the digital light sensor has been set up at an angle greater than 15 degrees from the center point of the screen.

8. The View Touch stop responding after I change the display resolution, or the display resolution is changed by certain program:

* Maximize the View Touch from the bottom task bar, and test it with laser pointer.  If mouse follows, minimize the View Touch.  If mouse does not follow, exit the View Touch.  Unplug the USB cable and plug it back in.  Start the View Touch and click Load Calibration.