Windows 10: display monitor not detected

I have a second screen which was detected and worked yesterday. I was using it as a second monitor by extending my display. From today I am not able to detect it. I am using a HDMI cable to connect my laptop to the second screen.

Steps I have tried:

1. Turning off and then turning on. both the laptop and the power source to the display.
2. Removing HDMI cable and connecting the cable again.
3. Trying to detect the second screen from display settings but i get the error "Didn't detect another display."
4. Disabling and enabling device drivers under "Display Adapters" in device manager.
5. uninstalling and installing driver under "Display Adapters" in device manager.
6. Using win + P and choosing extend display.
7. I also tried using my spare laptop using ubuntu. And the screen extension worked. So the HDMI cable and the screen display work.

Any ideas on how to proceed with fixing the issue?

:)

 

Windows 10 is not detecting my second monitor after the upgrade.Monitor display is there on boot up, and is listed in device manager, but is not detected when setting up displays.

Windows 10 is not detecting my second monitor after the upgrade. Radeon 4800 video card. Monitor display is there on boot up, and is listed in device manager, but is not detected when setting up displays.

Changing the title

Old title – Dual monitor issue.

New title – Windows 10 is not detecting my second monitor after the upgrade. Radeon 4800 video card. Monitor display is there on boot up, and is listed in device manager, but is not detected when
setting up displays.

 

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.

 

External Monitor Detected but Does not Display

I have a Surface Pro 3 running Windows 10, creators update 1803.

When attempting to connect to an external display (mini DisplayPort to HDMI), Windows detects the monitor but displays no signal.

The extended desktop appears in screenshots, but nothing on the monitor itself.

So far, I have:

• Updated Surface Pro 3 firmware
• Checked for all Windows update
• Tested with multiple monitors (at least 4)
• Tested with multiple cables
• Tested with multiple adaptors
• Updated Intel Graphics 4400 HD driver
• Removed Intel Graphics 4400 HD and reinstalled
• Rebooted more times than I can count

Any advice?