Resolving Common Monitor Configuration Issues

Monitor configurations can fail to apply for many reasons. This guide will outline some of the more common reasons and list steps on how to resolve them.

DisplayFusion uses a Windows API to set monitor configurations, so here's the first step when troubleshooting an issue with applying a configuration in DisplayFusion:

  1. Try setting up the same configuration in the Windows display settings. If it fails there as well, there's nothing you can do in DisplayFusion to make it work.

Trying to enable 3 monitors

If you're trying to enable 3 monitors and get an error, it may be that your video card only supports output to 2 monitors simultaneously, even if it has 3 physical outputs.

  1. You can try a Google search for video card model +"triple monitor" or video card model +"3 monitors" to see if the information is available on that.
  2. If your card doesn't support 3 monitors, you can purchase a USB display adapter. They're fairly inexpensive and can be had at most local computer and electronics shops. We usually recommend purchasing from a store with a liberal return policy, so that if it doesn't work for you, it's an easy return.

Only 1 monitor shows up in Monitor Configuration window

If you only see 1 monitor in the Monitor Configuration window, it could be due to missing or faulty video card drivers, unplugged or faulty cables, or a faulty video card or monitor. Here are some things you can check to help narrow it down:

  1. Check to make sure the monitors are powered on and set to the correct inputs. You can usually change the input using a physical button on the monitor. TVs and monitors connected via DisplayPort will "disconnect" from the computer when they're powered off or set to a different input.
  2. Check the Windows display settings, do all of the monitors show up there? If so, please send us a support request using the Help > Support Request button in DisplayFusion.
  3. Check to make sure the video card drivers are installed and up to date. You can usually get them from the NVIDIA or AMD websites, or from the website for the manufacturer of your computer.
  4. Check the cables, make sure they're plugged in tightly, and if that doesn't resolve it, try swapping them for other known good cables.
  5. Try connecting the missing monitor to another computer.
  6. Swap the monitor with another known good monitor.

Monitor shows as enabled but nothing is on the screen

If the monitor shows up in the Monitor Configuration window, and you can move applications to it, but don't see anything on the physical monitor itself, it could be that the monitor is set to the wrong input, or the monitor is defective.

  1. Try switching inputs on the monitor. This is usually done with a physical button on the monitor itself.
  2. Get up close to the monitor and have a look at the screen. If you can see a very faint image of the windows on the monitor, it's most likely that the backlight in the monitor is broken. In this case, the monitor will appear normally to Windows, but without a backlight, it's nearly impossible to actually see what's on the display.
Apr 26, 2019 (modified Jun 28, 2019)  • #1
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