Windows 10: Why is my extended display dimmed on this specific monitor?

My extended display monitor is dimmed. It was just working fine a few days ago and then today the brightness won’t adjust. I’ve tried rollbacks, I’ve tried different plugs, and I’ve tried different applications. Nothing has worked. Can someone please tell me what to do?

:)

 

Extend Display to second and third monitors

Hi Ian,



Thank you for writing to Microsoft Community Forums.



I appreciate the efforts taken by you in resolving the issue. I understand that you are unable to extend the display to second or third monitor. I’ll certainly assist you with the issue.



However, it would be great if you can help us with the details requested below:

• What happens when you try to extend the display?
  
• Do you receive any error message/code?
  
• Are you aware of any changes made to the computer recently?
  
• Which build version of Windows 10 is installed on the computer? To check type:
  winver in the search bar on the Taskbar and hit
  Enter.
  
• What is the make and model of the laptop?
  

Ideally, to extend the display we can use the shortcut Windows logo key + P, and select
Extend from the menu.



I would suggest you to refer the troubleshooting steps mentioned in the article

Troubleshoot external monitor connections in Windows 10 and see if that helps.



For additional information, see
Set up dual monitors on Windows 10.



Let us know the results.



Regards,

Nikhar Khare

Microsoft Community - Moderator

 

Unable to extend monitor display

Hi Jay Jap,

thanks again for your reply.

I checked the screen resolution settings through windows and then through the Nvidia graphics cards.

Windows detected both monitors but Nvidia settings didn't.

I downloaded and installed the Nvidia drivers again and it's working fine. Simple solution, not sure why I had to install the drivers again? But thanks for your help, your suggestion to check if the monitors were being detected prompted me that it had to
be a graphics card issue.

 

Extending display suddenly broke after changing resolution

Hi

Welcome to Microsoft community.

I understand the issue you're experiencing with extending your display after changing the resolution. It seems that changing the resolution to 2160p on one of the monitors that doesn't support it has caused the problem.

Here are a few steps you can try to troubleshoot and resolve the issue:

1. Disconnect both monitors from your computer and restart it.
   
   • This will help reset the display settings and clear any temporary configurations that may be causing the problem.
     
2. After the computer restarts, connect only the monitor that was set to 1080p and check if it extends properly.
   
   • This will help identify if the issue is specific to the monitor that was set to 1440p.
     
3. If the 1080p monitor extends fine, disconnect it and connect only the 1440p monitor.
   
   • Check if it extends properly on its own.
     
4. If both monitors extend fine individually, try connecting them both again and set the resolution to their respective native resolutions (1080p and 1440p).
   
   • Go to "Settings" > "System" > "Display" and make sure the resolutions are set correctly.
     
5. If the issue persists, you can try updating your graphics driver to the latest version.
   
   • Visit the website of your graphics card manufacturer and download the latest driver for your specific graphics card model. Install the driver and restart your computer.
     
6. If none of the above steps resolve the issue, you can also try performing a system restore to a point before you changed the resolution.
   
   • This will revert your system settings back to a previous state when the issue was not present. Keep in mind that this will undo any system changes made after the restore point.
     

Best regards

Derrick Qian | Microsoft Community Support Specialist