Third monitor keeps disconnecting on Windows 10

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What can I do if my third monitor keeps disconnecting?
 Change the display settings
  1. Go to the Start and click on Settings.
  2. Select System.

  1. On the Display option, scroll down to Multiple displays sections.

  1. Make sure the Extend these displays option is chosen.
  2. While here, check also all your display settings to make sure they are set up for multiple monitors.
 Update Windows 10
  1. Open the Start Menu and click on Settings.
  2. Click on Update & Security.

  1. On Windows Update, click the button Check for updates.

  1. If there are any available updates, install them.
  2. After the process is complete, restart your PC.
  3. You can now check if the issue still persists.
Update your drivers
3.1 Use Device Manager
  1. Right-click on Start and select Device Manager.
  2. Search for the Display adapters section and expand the menu.
  3. Right-click on your graphics driver and choose Update Driver from the menu.
  4. Click on Search automatically for updated driver software.
  5. Windows will now search and install the latest driver for your PC.
  6. Follow the on-screen instructions to finish.
  7. After the update is complete, reboot your computer.
 Set the power plan to high in Windows
  1. Press the Windows R keys to open the Run dialog box.
  2. Type in the following powercfg.cpl and then press Enter.
  3. In the Power Options window, choose High Performance.
  4. Change the plan settings to Never.
  5. Click Save changes and exit.
Change the resolution
  1. Right-click your desktop and select Display settings.
  2. Scroll down to Scale and Layout and click the drop-down menu located under Display Resolution.
  3. Because Windows 10 assigns these resolutions as recommended based on the display’s hardware you need to select a screen resolution that works best for your monitor.
  4. Lastly, make sure your monitor and graphics card can run at your chosen resolution.
Additional solutions

Here are a few additional solutions worthy of your attention:

  • Try another video cable on your monitor and check if the problem persists
  • Verify if there’s a lack of power to the card from your power supply unit in the system
  • Make sure that your video cable from the monitor is securely and firmly connected to your PC
  • Sometimes, unplugging the monitors and plug them back in one at a time can help your computer recognize all three monitors and use them properly
  • Try to use HDMI ports for all your monitors; sometimes, using VGA or DisplayPort can cause disconnections

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