I think I had the same problem as yours.

The solution that worked for me consists of enabling the display in Intel Graphics Command Center.

In the display settings in the Intel Graphics Command Center app, click the three dots of the concerned display and click enable if it's not enabled.

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Reddit
reddit.com › r/techsupport › external monitor is detected but shows no display
r/techsupport on Reddit: External Monitor is Detected but Shows no Display
November 18, 2024 -

Hi Everyone,

I'm facing a problem with my 2nd monitor. I'm using a Win10 64Bit laptop, and AOC Monitor with a VGA socket. I am using a VGA/HDMI converter in between. Used it for a long time without problem. But one day the screen was black. The monitor is working, laptop detects the monitor, I can even move my curser to the other monitor (But can't see it.)

I twitched with resolutions, refresh rate, etc. settings on windows display settings, nothing changed.

I tried to connect my laptop to my TV monitor with just HDMI cable (without converter) it works fine.

Then to see if the converter is working or not, I tried my sisters laptop on my setup with the HDMI/VGA converter and my monitor. But my sister's laptop works without problem.

And I went on and bought brand new HDMI/VGA converter anyway and tried it with my laptop but it's not working. (Both old and new converters are working on my friends laptop and his monitor.)

So as you can see I'm struggling to find which part is faulty.

I was suspecting from my VGA cable, but again with the same cable and converter my sister's laptop works fine.

Has anyone had this problem before? I really appreciate some help.

Thanks for reading this far and spending time :)

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Tech Support Forum
techsupportforum.com › home › forums › hardware support › other hardware support
[SOLVED] 2nd Monitor detected but not displaying | Tech Support Forum
September 28, 2011 - ... Re: 2nd Monitor detected but not displaying Right click on an empty part of the desktop, select Resolution from the list. In the resolution window select the #2 monitor from the drop down list, and set the resolution to one the monitor supports ...
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Reddit
reddit.com › r/computer › my computer isn’t recognizing the 2nd monitor. it’ll mirror the first but it can’t be detected! what am i doing wrong?
r/computer on Reddit: My computer isn’t recognizing the 2nd monitor. It’ll mirror the first but it can’t be detected! What am I doing wrong?
September 3, 2023 - ... I had to use a vdi cable and a usb cable, the cables I had were mirroring the monitors instead of separating them so I had to use 2 different kinds ... Leave that cable connected to one of the screens. Then you need a separated cable with ...
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Zorin Forum
forum.zorin.com › hardware support
External monitor detected but not displaying - Hardware Support - Zorin Forum
October 1, 2025 - Still fairly new to Zorin and Linux in general. Originally I couldn't get an external monitor to even be recognized by my laptop. After doing some reading on here, I tried a driver change from one of the NVIDIA proprietary to the X.org. Now the monitor will get detected in settings, but won't ...
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Microsoft Support
support.microsoft.com › en-us › windows › troubleshoot-external-monitor-connections-in-windows-5b46f4a4-9634-06bb-7622-f960facdfd49
Troubleshoot external monitor connections in Windows - Microsoft Support
Steps to change the default display adapter vary by device, so contact the manufacturer for more information. First, to confirm that one external monitor does work with your system, see the above info about using only one. If you’re able to use one external monitor, but have issues using more than one, it’s possible that your display adapter (also called a graphics card) can’t support more than one monitor.
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Tweaking
tweaking.com › knowledge base › how to › how to fix windows 11 not detecting your second monitor
Windows 11 Not Detecting Your Second Monitor: 7 Best Fixes
July 15, 2024 - Sometimes, a loose or damaged cable can be the root cause of detection issues. ... If you have spare cables, try using them to see if the issue persists. Additionally, try connecting the monitor to a different port on your computer. This can help identify if the problem lies with the cable or the port. Windows 11 often updates drivers automatically, but you can manually check for updates by following these steps: Press Win + X and select Device Manager. Expand the Display Adapters section.
Find elsewhere
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Reddit
reddit.com › r/techsupport › 2nd monitor stopped working after windows 11 update
r/techsupport on Reddit: 2nd monitor stopped working after Windows 11 update
January 28, 2025 -

I got a forced update from Windows 10 to Windows 11 few days back. After the update, my 2nd monitor stopped working. It's not getting detected at all. I tried some tips I found online like Windows + P, Nvidia Display Settings, updating drivers, but none of them have worked.

My 1st monitor is connected via HDMI, working perfectly fine. My 2nd monitor has a DVI port - I'm using a DVI to DisplayPort connector to connect it to my GPU. All this time it ran perfectly fine. The windows 11 update totally screwed it up overnight.

My specs are: i5-13600K, RTX 4070, 16 GB RAM, MSI motherboard.

EDIT: SOLVED! Intel drivers for the integrated gpu fixed it.

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AnandTech
forums.anandtech.com › home › hardware and technology › displays
Question - Third monitor Detected but cant display anything on Windows 11 | AnandTech Forums: Technology, Hardware, Software, and Deals
July 27, 2024 - Also, in Windows Display settings click on the 3rd monitor and make sure it is set to "Extend this display" and not set to "Disconnect this display" ... Try turning off Game Mode. To turn off Game Mode in Windows 11, you can do the following: ... Click to expand... game mode isnt on ... Click to expand... What about my second suggestion?
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Fortect
fortect.com › home › how to › how to fix windows 11 not detecting your second monitor
How to Fix Windows 11 Not Detecting Your Second Monitor
June 5, 2025 - Outdated or Corrupted Graphics Drivers: Graphics drivers are crucial in managing display outputs. Outdated, corrupted, or incompatible drivers can prevent Windows 11 from recognizing additional monitors.
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Super User
superuser.com › questions › 1841725 › second-display-not-detected-in-windows-11
multiple monitors - Second Display not detected in Windows 11 - Super User
May 8, 2024 - All I can think of is driver issues or bugs in Windows 11. ... Find the answer to your question by asking. Ask question ... See similar questions with these tags. ... Community Asks Sprint Announcement – January 2026: Custom site-specific badges! 0 Windows 7 does not recognise second display output · 3 Second screen detected but completely blank in Windows 8.1 · 2 Windows 10 does not detect Displayport to HDMI connection · 7 Display settings show too many monitors detected
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Reddit
reddit.com › r/windowshelp › second monitor hdmi not working after updating laptop to windows 11
r/WindowsHelp on Reddit: Second monitor HDMI not working after updating laptop to Windows 11
November 3, 2024 -

UPDATE: Solved! Check the comments for the solution that worked for me

Hey all,

I've been trying to connect my laptop (ASUS TUF Gaming FX505DT-BQ613T) to either my second monitor or my tv screen through HDMI. This has worked perfectly fine in the past, but after I updated it to windows 11, it stopped working. I've tested both the cables and the screens with other devices, and they work, so I don't think they're the problem.

When I plug in the laptop, there does appear to be something happening - at the very least, the monitor lighting up a bit, but then saying 'no signal' anyway. Similarly, when I unplug the cable, the laptop screen turns black for a second. It seems like there's not really any signal being sent through the cable. If I go to the multiple displays settings and click 'detect', it says 'we didn't find another display'.

I've tried a restart, and I've tried updating the display adapter drivers, but windows said that they were already up to date. I've also tried changing the display frequency to either 60 or 40 Hz, but no difference.

I'm not sure what to do next - I'd prefer not to mess with reinstalling the entirety of windows 11. Does anyone have an idea? Please let me know if you need any more info from me. Thanks!

Top answer
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Hi u/98sunflowers , thanks for posting to r/WindowsHelp ! Don't worry, your post has not been removed. To let us help you better, try to include as much of the following information as possible! Posts with insufficient details might be removed at the moderator's discretion. Model of your computer - For example: "HP Spectre X360 14-EA0023DX" Your Windows and device specifications - You can find them by going to go to Settings > "System" > "About" What troubleshooting steps you have performed - Even sharing little things you tried (like rebooting) can help us find a better solution! Any error messages you have encountered - Those long error codes are not gibberish to us! Any screenshots or logs of the issue - You can upload screenshots other useful information in your post or comment, and use Pastebin for text (such as logs). You can learn how to take screenshots here . All posts must be help/support related. If everything is working without issue, then this probably is not the subreddit for you, so you should also post on a discussion focused subreddit like r/Windows . As a reminder, this is a help subreddit, all comments must be a sincere attempt to help the OP or otherwise positively contribute. This is not a subreddit for jokes and satirical advice. These comments may be removed and can result in a ban. I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.
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Did you try win+p ?
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Driver Support
driversupport.com › home › blog › knowledge article › windows 11 not detecting your second monitor? let’s fix it.
Windows 11 Not Detecting Your Second Monitor? Let's Fix it.
April 10, 2024 - Reset Display Settings: Look for an option to reset the display settings to their default. If there’s no direct option, you may need to manually adjust the settings to their original state, based on your system’s default configuration. Check for Monitor Detection: After resetting, check if Windows 11 now detects your second monitor.
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Windows Central
windowscentral.com › microsoft › windows help
Fix a second monitor not detected on Windows 10 and 11
September 17, 2025 - If the computer was recently updated or the graphics driver was manually upgraded, and the system cannot detect the second monitor, rolling back to the previous driver version may resolve the issue.
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Windows Report
windowsreport.com › windows 11 › fix: windows 11 monitor detected but not displaying
Fix: Windows 11 Monitor Detected but Not Displaying
September 9, 2025 - The Windows 11 monitor detected but not displaying is usually caused by a connectivity or driver problem.