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.

๐ŸŒ
Microsoft Support
support.microsoft.com โ€บ en-us โ€บ windows โ€บ troubleshoot-external-monitor-connections-in-windows-5b46f4a4-9634-06bb-7622-f960facdfd49
Troubleshoot external monitor connections in Windows - Microsoft Support
If this does not work, see if restarting helps. To restart your device, select Start, then select Power โ€‹โ€‹โ€‹โ€‹โ€‹โ€‹โ€‹โ€‹โ€‹โ€‹โ€‹โ€‹โ€‹โ€‹> Restart. If that doesnโ€™t work, select Start, then select Power > Shut Down. Then, turn your device back on. If you are experiencing issues after an update, returning, or rolling back, to a previous version of your display driver may solve the issue.
๐ŸŒ
Windows 10 Forums
tenforums.com โ€บ graphic-cards โ€บ 89213-second-monitor-detected-but-blank.html
Second monitor detected but blank - Windows 10 Help Forums
I can see both monitors under the display settings, in the Nvidia controll panel and in the device manager, if i unplug one and start the pc the other display works fine. They also both work fine as dual on my old pc. ... Computer Type: PC/Desktop OS: Windows 10Pro 64bit CPU: Intel(R)Core(TM) i5-6600K CPU @ 3.50GHz Motherboard: Asus Maximus Ranger VIII Memory: 2x 4 GB DDR4 Keyboard: CM Storm MB24 Mouse: CM Storm MS2K Case: CM Storm Trooper Browser: chrome Antivirus: Kaspersky ... Second monitor detected but blank in Graphic Cards Product: HP ENVY All-In-One 27-B1XX Operating System: Microsoft Windows 10 (64-Bit) I have a second monitor connected to my all in one desktop.
๐ŸŒ
Tech Support Forum
techsupportforum.com โ€บ home โ€บ forums โ€บ hardware support โ€บ other hardware support
[SOLVED] 2nd Monitor detected but not displaying | Tech Support Forum
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 if it's not correct.
๐ŸŒ
ElectronicsHub
electronicshub.org โ€บ home โ€บ windows second monitor detected but not displaying
Windows Second Monitor Detected But Not Displaying
September 20, 2024 - You can disconnect your 2nd monitor from the settings. For connecting it back, go to Multiple Display Options, and click the Detect button. Several people have got this display connected but not active issue fixed just by reinstalling or updating the graphics drivers on their PCs. Hence, it is a proven working method that you can also try out. Go to Device Manager by right-clicking on the Windows icon.
๐ŸŒ
The Windows Club
thewindowsclub.com โ€บ the windows club โ€บ second monitor detected but not displaying on windows 11/10
Second monitor detected but not displaying on Windows 11/10
September 28, 2023 - The primary cause of this issue is the cable. Might be your cable is faulty or it is loose. Check the cable connections properly. Other causes include a corrupted display driver, incorrect display resolution and refresh rate, etc.
๐ŸŒ
Tom's Guide
forums.tomsguide.com โ€บ home โ€บ laptops โ€บ laptop tech support
External monitor won't display but is recognised/detected | Tom's Guide Forum
February 29, 2016 - Not open for further replies. ... I have a brand new out-of-the-box Dell S2716DG monitor. I connected it to my MSI laptop with Windows 10. The laptop recognises the monitor. However, the screen stays blank. I tried the duplicate display function, extended displays. I have tried making my external monitor as primary, still no luck. When setting my Dell monitor as extended, the mouse can move over and I can move windows over but they just disappear.
๐ŸŒ
Digital Trends
digitaltrends.com โ€บ home โ€บ computing โ€บ features
The most common multi-monitor problems and how to fix them - Digital Trends
April 10, 2020 - From the Monitor Settings (Windows 11) or Multiple Displays (Windows 10) drop-down, select Show only on 1 or Show only on 2 as appropriate. You will need to turn this back off once youโ€™ve finished gaming, but it is a surefire way to get your game working on the right display.
Find elsewhere
๐ŸŒ
Reddit
reddit.com โ€บ r/windowshelp โ€บ (windows 10) second screen detected but no signal
r/WindowsHelp on Reddit: (Windows 10) second screen detected but no signal
October 7, 2023 -

Hi. I've had this problem before when I connected the screen with my former laptop (which is the same brand as my new one that had a problem; Asus). Basically, the second screen is detected AND usable (I can move the cursor into the screen). But as I said, the second screen is not showing anything, instead, it show the message "No signal" and then the screen just goes black. The screen is pretty old in which it connects with the VGA port and uses an adaptor to connect with an HDMI port on my laptop.

๐ŸŒ
DisplayFusion
displayfusion.com โ€บ Discussions โ€บ View โ€บ windows-10-does-not-recognize-second-monitor
Windows 10 does not recognize second monitor โ€ข Discussions โ€ข DisplayFusion by Binary Fortress Software
It had been displaying the same screen on both monitors but every time I clicked 'Detect' it told me that it couldn't detect a second monitor. Then while I was reading the discussion in this forum, the screens went black for a few seconds and came back on having automatically switched to an Extended display, now recognizing both monitors. Crazy! I think that Windows 10 was just doing some behind the scenes downloads to set this up for me without letting me know it was working on it.
๐ŸŒ
Windows Central
windowscentral.com โ€บ microsoft โ€บ windows help
How to fix a second monitor not detected in 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. To remove and reinstall an older version of a graphics driver on Windows 10, use these steps: Open Start. Search for Device Manager and click the top result to open the app. Double-click to expand the Display adapters branch. Right-click the graphics adapter and select the Properties option. ... Click the Driver tab. Click the Roll Back Driver button.
๐ŸŒ
VSS Monitoring
vssmonitoring.com โ€บ 2nd-monitor-detected-but-not-displaying
2nd Monitor Detected But Not Displaying โ€“ Our Quick Fix
March 24, 2023 - When you're in the Device Manager tab, you can double-check that your graphics card is being detected by the Windows operating system. Look under the "Display Adapters" and "Monitors" tabs.
๐ŸŒ
How-To Geek
howtogeek.com โ€บ home โ€บ windows โ€บ 8 fixes for a second monitor not detected on windows
8 Fixes for a Second Monitor Not Detected on Windows
October 30, 2025 - For help, check out our guides to rebooting a Windows 10 PC or a Windows 11 computer. Some computers won't detect a monitor if it's plugged in after booting up. So a simple reboot can get things working as they should. ... If your graphics card and display both support an alternative display type (like HDMI, DVI, or DisplayPort), you can try switching to an alternative display technology or stick with the same technology but try a different port or cable.
๐ŸŒ
The Windows Forum
thewindowsforum.com โ€บ forums โ€บ windows 10 forums โ€บ windows 10 hardware chat and support
Second Monitor Detected by Windows but not Displaying | The Windows Forum
December 27, 2023 - Secondly dont try hot swapping the monitors over, do a restart and when its loaded look in the display settings for IDENTIFY, this puts a large number on the screen for a few seconds to show which monitor is which on that machine. Alter the settings so both Computers have the same screen layout. IDENTIFY is a key to finding this issue solution. The drivers make all the difference, but if your work laptop is a SPECIFIC one for your firm (as in the company has had them made for the job ) expect issues to arrise.
๐ŸŒ
Reddit
reddit.com โ€บ r/techsupport โ€บ 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 :)

๐ŸŒ
Windows Report
windowsreport.com โ€บ fix โ€บ windows 10 โ€บ fix: third monitor detected but not displaying
Fix: Third Monitor Detected But Not Displaying
September 26, 2025 - A bunch of users has reportedly fixed this 3rd monitor detected but not displaying issue in Windows 10, by enabling this option.
๐ŸŒ
PC Game Haven
pcgamehaven.com โ€บ home โ€บ fixes โ€บ 2nd monitor detected but not displaying | our troubleshooting guide
2nd Monitor Detected But Not Displaying
May 15, 2020 - And if the problematic second monitor ... connection. From Windows 10, a corrupted part or an outdated version of your graphics driver may cause the system to overlook a second monitor....
๐ŸŒ
Driver Easy
drivereasy.com โ€บ home โ€บ knowledge base โ€บ common errors โ€บ 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 - Commonly , Windows 10 cannot detect the second monitor is due to the incompatible display driver. Follow this guide to get the correct display driver.