Windows 10: i cannot get my computer to display on a second monitor

Hello, I cannot get my computer to display on a second monitor. It is connected correctly and I have tried to use the 'detect' function in 'display'. nothing works. Electricity and cable are fine.

:)

 

Second monitor doesn't always display?

I have the same problem that after reboot, morning startup or after sleep the second monitor, that I have selected as my main display, quite often (not always) seems to have been forgotten. I am using an HP ProBook6560b laptop and a Samsung Syncmaster P2250
display as my second display. It is connected with the analog monitor cable and the computer KNOWS that it is connected to this monitor.

What I mean is that I can find the monitor and its drivers onboard and it is listed in devices attached to this computer.

 

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

 

windows Can't detect my second monitor

Hi Max,

Thank you for posting your query in Microsoft Community.

I understand that you are having a tough time working on the computer.

I will certainly help you to resolve the issue.

• 
  What happens when you try to connect the second monitor?
  
• 
  Do you receive any error code/message?
  
• 
  Have you tried to connect the second monitor on a different port?
  

I suggest you to connect second display using a different port available on your PC and check if the second display works. If second display works in other port, then the possible cause for this issue may be discrete video card driver.


Let us try the following steps, and check it helps.

Step 1: Run the Hardware and Devices
troubleshooter.

Hardware and Devices troubleshooter checks for common problems and makes sure that any new device or hardware connected to your PC is installed correctly.

• 
  Type troubleshooting in the search bar.
  
• 
  Select Troubleshooting.
  
• 
  Select View all on the top left corner.
  
• 
  Click on Hardware and Devices.
  
• 
  Follow the on-screen instructions to run the troubleshooter.
  

Step 2: Update the Display Adapter.

• 
  Press Windows key + X and click on
  Device Manager.
  
• 
  Expand Display Adapter.
  
• 
  Right click on the video driver and select
  Update Driver Software.
  
• 
  Restart the computer.
  

Also, see:

How to: Install and Update drivers in Windows 10

How to add and use a second monitor with Windows 10

Hope it helps.

Let us know the status, we are glad to assist you further.