Windows 10: Can't duplicate my screen from monitor to pc

I'm trying to duplicate my monitor screen onto the TV, but when I pressed 'ctrl+P' and changed it to duplicate it just goes back to pc screen only. Tried going to display settings, it doesn't detect anything. Projection setting doesn't support receiving miracast despite using hdmi cable.

:)

 

Windows 7 - Cannot duplicate the monitor to my Samsung LCD

Hello, everyone!
I'm trying to duplicate a monitor to my Samsung LCD but Windows 7 says that it's unable to save the changes each time I click APPLY after selecting DUPLICATE screens option. WIN+P also doesn't work - I can only see what's going on either on my pc monitor (in Projector Only mode) or TV (in Computer Only Mode).

Both TV and monitor are using 1920x1200 resolution and they are connected via HDMI 1.4, Graphic Card is MSI Radeon 6950.

Any suggestions would be highly appreciated.

 

Duplicate monitors

I have a surface pro 3 that just updated itself. After it updated my screen will no longer duplicate to my external screen. I can't even find the setting to do that any longer. I've tried to restore to an earlier time but I am unable to, I get an error
saying it can not restore. Any suggestions on how to get the monitors to duplicate? I am operating on Windows 8.1.

 

Setup 2 monitors with different refresh rate in duplicate mode

Hi, СуминНикита

Welcome to the Microsoft Community.



Unfortunately, running two monitors with different refresh rates in duplicate mode may cause some issues. Duplicate mode essentially mirrors the exact same image on both screens. Since the refresh rates differ between your monitors, Windows will default to the lowest common refresh rate to ensure compatibility, which in your case is 120Hz.

To run programs or games at 144Hz on your internal monitor while duplicating the display on your external monitor, you may need to utilize third-party software that can manage this kind of setup, but it may still lead to graphical issues or performance anomalies.

Here are some steps you can try:

1. Set Primary Display:
   
   • Right-click on the desktop and select “Display Settings.”
     
   • Scroll down to “Multiple displays” and select “Duplicate these displays” from the dropdown menu.
     
   • Choose the monitor you wish to set as your main display and check the box that says “Make this my main display.”
     
2. NVIDIA Control Panel (if you have an NVIDIA GPU):
   
   • Open the NVIDIA Control Panel by right-clicking on your desktop and selecting it from the dropdown menu.
     
   • Go to “3D Settings” > “Manage 3D settings.”
     
   • Under the “Global Settings” tab, find the “Preferred refresh rate” option and set it to “Highest available.”
     

Please note that these steps may not fully resolve the issue due to the inherent limitations of running duplicate displays with different refresh rates. It’s generally recommended to use monitors with the same refresh rate for the best performance.

Best Regards

Martin | Microsoft Community Support Specialist