Troubleshooting - Black Box USB Display Adapter User Manual

4. Troubleshooting

Q1: The display on the add-on monitor is blank.
A: If the monitor power LED is green (in most cases), wait a moment for the monitor to
show the video as sometimes it takes time for the add-on monitor to show the video. You
can also reboot your system to try again. Also make sure the computer is not in standby or
hibernation mode, which will lead the add-on monitor to be blank.
If the monitor power LED is red (in most cases), check if the connection is properly made. If
problem still exists, uninstall the driver, unplug the adapter and reinstall the driver to try
again.
Q2: The add-on monitor is flickering.
A: This is usually caused by a low refresh rate. To solve this problem:

In mirror mode, increase the refresh rate of the main monitor. This will in turn increase
the refresh rate of the add-on monitor.

In extended mode, increase the refresh rate of the add-on monitor.
Q3: When I play MPEG file by Windows Media Player on the extended monitor, how come
the display becomes abnormal when I switch it to full screen mode?
A: If your system is Windows XP SP1, we suggest you upgrade it to SP2 to solve this
problem.
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4. Troubleshooting