Windows 10: I cant duplicate but i can extend and second screen

With using Win + P my projector doesnt recognize the duplicate option but when i switch to extend or second screen the projector immidately recognize it.i am using windows 11 and is projecting to an acer projector via cable

:)

 

Problems while extending and duplicating on my second monitor

Hi there!

So I wanted to get a dual monitor for my laptop so I found a monitor at home. Its an NEC LCD monitor which takes a VGA cable for input. So I got a HDMI to VGA adapter, plugged it into my Laptop (Asus X510UAR) and it worked flawlessly. All the projection modes such as PC only, Duplicate, Extend and Second Screen.

But when i wend to adjust the resolution for the second monitor in the display setting, idk what i pressed accidentally, but now my second monitor shows a black screen during Duplicate mode and while extending to the dual monitors, the mouse cursor does shift to another screen, but the dual screen is still black(even though apps are working on it. And when i switch to only the second screen, the second screen works completely fine(Indicating that the hardware is absolutely fine)

I've tried with many forum suggestions such as changing the resolution of both the screens as well as changing the primary monitors and the configuration of both the screens and orientation as well but no luck. I've even tried changing the Microsoft administrator account to a new account to reset to the default setting but no luck there as well. And other ways to reset to the default setting weren't possible on my laptop.

Please do suggest what could be the possible ways to solve the issue which wasn't there when i initially started.

Thanks!

Windows Version 1903(OS Build 18362.592)

 

Extending Screen to Laptop

Pressing MS KEY + P brings up PROJECT which shows display options PC screen only, Duplicate, Extend, Second screen only. After selecting Extent I then click on the “Connect to a wireless display”. Then I select my laptop that is listed.

That has worked well in the past, but the during a session a few days ago the connection dropped and I have not seen my laptop in the list since.

I have not found any steps to take that actually address this issue.

 

my second screen is no longer recognised/working.

Hi Hans,

You may have to re-specify the display style on your laptop. There's a possibility that your laptop is currently set to only display the PC screen. Let's change the display style to
Extend or Duplicate and see if your laptop will recognize your TV as the second monitor/screen.

By the way, please ensure that your TV is properly connected to your laptop using a VGA, DVI, HDMI or DisplayPort cable, then follow the steps below to change the display style:

• Press the Windows key + P.
• In the right pane of your screen, the following display styles will appear:
  
  PC Screen Only
  
  Duplicate
  
  Extend
  
  Second Screen Only

3. Select either Duplicate or Extend.

Let us know how it goes so we can assist you should you need further help.

Regards.