If your system has more than one display adapter, also called a graphics card, you can try switching your system’s default display adapter. Typical ports are HDMI, VGA, DVI, and DisplayPort. If your system has more than one video output port, try plugging your external monitor into one of the other video output ports. If those didn’t work, here are more possibilities: This can help to isolate whether the issue is with the monitor or the primary system Try using the external monitor with a different system. If the new one works, you know the previous cable was faulty. Try changing the cable connecting the external monitor. Make sure the cable connecting your PC to your external monitor is secure. Connected docks, dongles, adapters and other hardware can cause conflicts. If your projector is connected to a Laptop or Notebook computer, or this is a secondary display, the video output settings on your operating system may be disabled.If you’re not seeing what you expect on the external monitor, start with basic hardware troubleshooting:ĭisconnect all accessories from your PC.If your projector has a different signal type, try it to see if a different connection is able to get a signal. If available, try another video connection.Try a different video cable, the video cable may have a problem.Change the input selection of the projector.Make sure the video cable supplied with the panel is tightly secured to the video card in the computer and to the back of the projector.
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