Hi, I am Dhanam, Independent Advisor here to work with you on this issue.

I know this has been difficult for you, Rest assured, I'm going to do my best to help you.

Uninstall your display driver

In the search box on the taskbar, type device manager, and then select it from the list of results.

Select the arrow to expand Display adapters.

Under Display adapters, right-click the adapter, then select Properties.

Select the Delete the driver software for this device check box, and then select OK.

Restart your device and Windows will attempt to reinstall the driver.

This is a public user-to-user support forum. I'm a user like you helping other users. I do not work for Microsoft and cannot access any user accounts.

I hope this can help you. If this still can't solve your problem, just let me know and I'll do my best to try to help you.

Regards,

Dhanam,

Independent Advisor.

🌐
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 ?
Discussions

Second-monitor-not-detected-after-Windows-11-update
Welcome to Lenovo and Motorola community. If the website doesn't work properly without JavaScript enabled. Please enable it to continue More on forums.lenovo.com
🌐 forums.lenovo.com
January 11, 2024
[Article] Windows 11 Troubleshoot Second monitor not detected (Updated 2024)
📌 Note: This article was originally created by Greg Carmack Windows MVP 2010-20 (ret'd), a valued member on Answers Support Community. It provided meaningful insights and proved helpful to many. We're recreating it here on their behalf to preserve its… More on answers.microsoft.com
🌐 answers.microsoft.com
0
December 2, 2022
Windows 11 not detecting second monitor
Did it work with Windows 10? Or is this a new laptop with Windows 11? If under Windows 10 it was working but not with Windows 11 then maybe the driver. Did you use a converter such as HDMI to VGA or directly HDMI to HDMI? If you used a converter probably its the converter issue. The HDMI cable can also be the culprit. More on reddit.com
🌐 r/Windows11
14
4
April 12, 2022
Windows 11, Second monitor can't be detected, even when both monitors work independently.
Making changes to your system BIOS settings or disk setup can cause you to lose data. Always test your data backups before making changes to your PC. For more information please see our FAQ thread: https://www.reddit.com/r/techsupport/comments/q2rns5/windows_11_faq_read_this_first/ I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns. More on reddit.com
🌐 r/techsupport
15
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February 15, 2023
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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, corrupted, or incompatible drivers can prevent Windows 11 from recognizing additional monitors. Updating or reinstalling the latest compatible drivers often rectifies these detection problems.
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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 - This could indicate a problem that needs addressing. Review Display Settings: Go to your display settings in Windows 11 to ensure the second monitor is enabled and set up correctly. Sometimes, simply clicking “Detect” can resolve the issue.
🌐
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 - Driver Issues: Outdated or incompatible display drivers can prevent Windows 11 from recognizing the second monitor. Regularly updating your display drivers can help avoid this issue.
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Windows Central
windowscentral.com › microsoft › windows help
How to fix a second monitor not detected in Windows 10 and 11
September 17, 2025 - To detect an external monitor manually on Windows 11, use these steps: Open Settings. Click on System. Click the Display page on the right side. ... Click the Multiple displays setting. Click the Detect button. ... Once you complete the steps, the system should detect the external display. To connect a wireless display as a secondary screen, use these steps:
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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
USB adapter – If you have a USB-C ... suddenly stopped, here are a few things you can try. In some cases, pressing Windows logo Key + Ctrl + Shift + B to reset your graphics driver may fix your issue....
Find elsewhere
🌐
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 - I expected that after trying these steps, Windows 11 would detect the second display and allow me to extend or duplicate my desktop as usual. However, none of these attempts have been successful. ... @jsotola The first display is the primary display of the laptop. I also tried selecting the second screen only option from the Win + P menu, but nothing worked.
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Driver Easy
drivereasy.com › home › knowledge base › common errors › fix second monitor not detected on windows 11/10 [solved]
Fix Second Monitor Not Detected on Windows 11/10 [Solved] - Driver Easy
October 22, 2025 - Sometimes your second monitor can’t be detected might be due to the wrong-set project mode. Quickly and easily change your project mode by these two steps: 1) On your keyboard, hold down the Windows logo key, then press the P key.
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Lifewire
lifewire.com › fix-windows-11-second-monitor-8677618
How to Fix It When Windows 11 Isn't Detecting a Second Monitor
August 15, 2024 - It’s possible that the monitor isn’t automatically detecting your Windows 11 computer. Change the monitor’s brightness and contrast settings. Using your monitor’s physical buttons, increase its contrast and brightness. It’s possible that your monitor is actually working, but its display is set to the darkest settings. Try alternative power sources. Plug the second monitor into a separate outlet from the computer, as it may not be getting enough power.
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Lenovo Community
forums.lenovo.com › t5 › ThinkPad-X-Series-Laptops › Second-monitor-not-detected-after-Windows-11-update › m-p › 5282059
Second-monitor-not-detected-after-Windows-11-update
January 11, 2024 - Welcome to Lenovo and Motorola community. If the website doesn't work properly without JavaScript enabled. Please enable it to continue
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RoyalCDKeys
royalcdkeys.com › blogs › news › fixing-windows-11-not-detecting-second-monitor
Fixing Windows 11 Not Detecting Second Monitor – RoyalCDKeys
July 11, 2024 - ... In the display settings window, scroll down and click on "Detect" under the "Multiple displays" section to allow Windows to search for any additional monitors connected to your system.
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Microsoft Support
support.microsoft.com › en-us › windows › how-to-use-multiple-monitors-in-windows-329c6962-5a4d-b481-7baa-bec9671f728a
How to use multiple monitors in Windows - Microsoft Support
Tip: If you're using a wireless display adapter, connect the adapter to an HDMI port on newer TVs, then wirelessly connect your PC to it. After connecting your wireless display adapter to your TV, go to your Windows 11 PC, press the Windows ​​​​ key+ K to open Cast, then select your wireless display adapter. You'll see this option when Windows detects more than one display.
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Yahoo!
tech.yahoo.com › yahoo tech › computing
8 Fixes for a Second Monitor Not Detected on Windows
October 30, 2025 - ... Right-click on the desktop and select "Display Settings" from the context menu. In the "Display Settings" window, you will see a diagram of displays currently connected to your computer.
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MakeUseOf
makeuseof.com › home › windows › windows 11 second monitor not detected: 5 fixes
Windows 11 Second Monitor Not Detected: 5 Fixes
October 3, 2023 - Restarting your computer can detect the second monitor. It's a simple solution but effective. Turn off your second monitor, wait a few minutes, and then turn it back on. This can make Windows recognize it.
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XDA Developers
xda-developers.com › home › monitors › windows guides › how to fix a second monitor not detected on windows
How to fix a second monitor not detected on Windows
February 27, 2024 - Click Detect next to Detect other display. Windows will attempt to connect to external displays that are connected, which could fix your issue. Another potential reason why your external monitor may not be working is that your display drivers are out of date. Maybe your current version has a known issue or just doesn't play nice with your monitor or GPU for some reason.
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Microsoft Answers
answers.microsoft.com › en-us › windows › forum › all › windows-11-troubleshoot-second-monitor-not › 94694b03-a0c3-4d0a-b87a-3e09c7507733
Windows 11 Troubleshoot Second monitor not detected ...
December 2, 2022 - If necessary first remove the old driver using DDU https://www.wagnardsoft.com/content/ddu-guide-tutorial (not necessary with Microsoft Basic driver which is a placeholder if nothing else is available) and/or installing in Safe Mode with Networking (so you have internet), or Safe Mode, accessed by one of these methods: https://www.digitalcitizen.life/4-ways-boot-safe-mode-windows-10 · While there check also for newer chipset, BIOS/UEFI firmware (very important), network, sound, USB3 and other drivers, comparing to the ones presently installed in Device Manager reached by right clicking the Start Menu. If this doesn't give you the latest or ideal driver for what you need, compare it to the driver offered by · the Intel driver update Utility here: http://www.intel.com/content/www/us/en/support/detect.html or