Windows 10: Two Monitors, Duplicated Display, Computer only detects 1

My friend has windows 10 and her computer was working completely fine. However, it randomly shut down and now it only detects one of the plugged in monitors and duplicates one screen onto both of them.

:)

 

Laptop display does not detect itself

Hi,

I only have 1 computer (the laptop) and 1 external monitor. The laptop cannot detect its own screen.

So when I follow your steps, this is what happens:

• Go to Settings. (Done)
• Click on System. (Done)
• Under System, choose Display. (Done)
• Under Multiple displays, click on Duplicate these displays and apply. (Done)
• But then I undock my laptop and redock. Re-login, etc.
• Only the external display turns on. The laptop does not turn on its own display. In order to get the laptop display to wake up, I need to follow steps 1-4 again. The settign "Duplicate these displays" does not seem to be retained.

 

Laptop display does not detect itself

Hi,

In regards to your concern, since the second screen can't detect the display settings of your other laptop, we suggest that you perform the steps below and see if it helps:

• Go to Settings.
• Click on System.
• Under System, choose Display.
• Under Multiple displays, click on Duplicate these displays and apply.

Let us know the details so we could further help.

 

How to duplicate 3 displays in Windows 10?

I'm running a setup with 1 monitor and 1 computer with an RX470 where they are connected with 3 cables: DVI Dual Link, HDMI and DP. Both Windows and the AMD software correctly detect these connections - as 3 monitors. I switch between the input type via a button on my monitor. The problem should be the same with 3 different monitors and any connection types.

Windows allows me to:

• Disable any of them.
  
• Extend any of them.
  
• Duplicate any 2 of them.
  

However, I want to duplicate all 3. I read a bit around other sites and it seems to be a limitation of Windows 10, but I didn't find a definitive source. Some suggest that you have to use additional hardware like a splitter.

How to duplicate 3 (or more) displays?