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When the second monitor displays the message “No Input Signal,” you can try a couple of solutions. The most straightforward approach is to check the monitor input source settings.
The no signal error appears when your monitor is on but isn’t detecting a signal from the connected device. Several things can cause this issue, some more severe (and costly) than others. These include: Loose or faulty cables; Poorly configured display; Outdated drivers; Faulty monitor; Hardware issue; Troubleshooting Why Is Your Monitor ...
Second monitor not detected? Here's how to fix it. Check that your monitor is powered on; Ensure your monitor and PC are connected; If you're using a graphics card, check...
If your secondary monitor isn't being detected, you can force Windows to detect it, check all of your connections, reboot the PC, try an alternative connection, and update your graphics drivers to fix it. A second monitor is one of the most potent productivity boosters for Windows users, but sometimes your computer fails to see the extra display.
If the second monitor is on, but there is no display on a Windows PC, the issue might be with your cable. Use these fixes to resolve the issue.
On Windows 10 and 11, you can use these steps to detect a second monitor on your laptop or desktop when the system is unable to find it automatically.
Have you tried using your second monitor as the primary monitor? does it work when it is the only monitor connected? If so, the problem lies either with Windows settings, or with the hardware, this could be as simple as an issue with a video Port.
Troubleshoot issues that occur when setting up external monitors. If you are trying to set up an external monitor and it’s not working, press the Windows logo key + P to make sure that the Extend option is selected. If the Extend option is selected, try the following troubleshooting tips.
Reasons for Second Monitor Not Detected/Second Monitor No Signal; Method 1: Use Hardware Troubleshooting; Method 2: Using Settings; Connect the Second Monitor Wirelessly; Method 3: Update/Reinstall/Rollback the Graphics Driver; Bottom Line
Here’s what to do if dual monitor is not being detected on a Windows PC. 1. Turn Off Monitors Before Connecting. 2. Enable Extend Option in Windows. 3. Force Detect Second Monitor Manually. 4. Check Scale, Resolution. 5. Set Same Refresh Rate. 6. Update Display and Graphics Card Driver. 7. Uncheck HDR for Second Monitor. 8. Delete Registry Key.