- Check your video settings on your computer to make sure that the display of the second monitor is enabled.
- Ensure the cables connecting the two monitors are firmly connected and the monitors are receiving a signal from your computer.
- evaluate your computer’s video output settings to make sure the video output port is enabled.
- Reset the video resolution of each display. For instructions on how to reset the video resolution, refer to the user manual for your PC or video card
- Identify the correct display ports for the two monitors. If the second monitor is not a primary standard monitor (such as VGA, HDMI, or DisplayPort) refer to the user manual for the monitors for specific instructions to enable the port.
