Second Monitor Detected But Not Displaying – Working Solutions

Deuxième moniteur détecté mais ne s'affichant pas - Solutions de travail

Setting up a multi-monitor setup is a goal for many of us PC enthusiasts. Still, it can be a real disappointment when the second monitor doesn't cooperate, even if the computer recognizes its existence.

The culprit may be an error in your computer's graphics card settings or a hardware problem with the monitor itself. Either way, rest assured that I am here to guide you through some simple solutions that could easily remedy this situation.

If you are looking for solutions to fix the problem of a second monitor detected but not showing, you have come to the right place. Stay with me, because I'm about to dive into the deep end to find the optimal solution.

Before you start troubleshooting the “Second monitor detected but not displaying” issue.

Here's a quick checklist to consider

  • Have I encountered this problem before? Is this an issue specific to this particular monitor or have I experienced it on other displays?
  • Check to see if other people have reported similar issues. This could indicate a larger problem.
  • If you are experiencing this problem for the first time, it could be a problem with the display itself, the cables, the connectors, or even the graphics card.
  • If this is a recurring problem, think back to the steps you took to resolve the screen issue in the past.
  • Follow these troubleshooting steps and see if the issue is resolved.
  • If the problem persists, there is likely a problem with the monitor, cable, or your system.
  • If this problem is common in your office or business, it may be time to call technical support for help.
  • If you are using the monitor for the first time or if you have used it before but it suddenly stopped working, there is a good chance that it is defective and you will need to buy a new one. Here is the LG 27UP850 which could do the trick. So make sure the monitor is working before trying these time-saving solutions.
  • Fix 1: Check Resolution and Drivers

    As a Windows user, you need to go to “Device Manager” and check if your second monitor appears in the display list, equipped with the correct drivers. You may need to download and install the correct drivers for your display to work properly.

    Let's try another approach if that doesn't work. Start by using a very low resolution to see if the monitor responds. If you get an image at these low resolutions, gradually increase them until you hit an obstacle. This strategy will help you identify the resolution threshold at which the monitor stops working.

    Solution 2: Try with ports and inputs

    Try this – you may need to change your monitor input. Monitors with multiple display adapter ports on the back can often switch inputs, allowing you to switch from computer to TV, for example. Typically, these monitors default to the TV setting.

    Second monitor detected but not displaying

    Even if you have trouble getting a signal from your monitor, the buttons on the sides, bottom, or back of the monitor should still work. One of these may be labeled “input,” which allows you to switch between different settings. Try it and see if it solves your problem.

    Also Read: How to Fix Acer Monitor No Signal Issue? Causes, best solutions

    Fix 3: Check for video card issues

    While some monitors are set to automatically adjust for input, you may need to manually change it on the monitor's on-screen display (OSD) if it has been changed.

    You may also need to delve into your video card manufacturer's settings and make sure you're extending or mirroring the desktop, depending on your preferences.

    If these steps do not yield results, you may consider updating your video card drivers as a last resort. You can check for driver updates from Microsoft. And remember that as a last resort and only if absolutely necessary, you can consider updating your BIOS.

    Second monitor detected but not displaying

    But be careful: I do not recommend performing a BIOS update unless it is critical due to the risks it carries. You can update your drivers using tools such as Windows Update or HP Support Assistant.

    Also read: What is afterglow on a monitor?

    Solution 4: Try a System Restore

  • Start by opening the Start menu and searching for “Create restore point”. Select the first result to open System Properties.
  • In System Properties, click the “System Restore” button.
  • In the next window, click “Next” and select the restore point you want to use.
  • Remember that clicking “System Restore” will revert your PC settings to the last known configuration.
  • But wait, there is one important note to consider before using Restore Point: you need to enable it first. This allows Windows 10 to create restore points for your system. Here's how to do it:

  • Return to the “Create Restore Point” window in your computer’s System Restore feature.
  • Make sure it is enabled from this screen. This feature is only accessible from system drives or computers with the operating system installed.
  • Second monitor detected but not displaying

    With these steps, you are well equipped to use the Restore Point feature efficiently and safely.

    Fix 5: Play with settings

  • Start by reviewing your display settings. Right-click on an empty area of ​​your desktop and select “Display Settings.” Windows will automatically attempt to detect the monitor once you click the “Detect” button.
  • If the previous step does not yield results, press Windows key + X to open the quick access menu and select “Device Manager”.
  • Once in Device Manager, verify that your graphics card is detected by Windows. Look in the “Display adapters” and “Monitors” sections. Watch for errors marked with a yellow warning sign.
  • Return to your dual monitor display settings by right-clicking on an empty area on your desktop.
  • Select the monitor that is causing you problems (for example, monitor 2).
  • Try clicking “Identify”. It doesn't always work, but it's worth a try.
  • Scroll down and click “Advanced display settings” at the bottom of the page.
  • Click “Display Adapter Properties for Display 2” (or the problematic monitor).
  • Switch to the Monitor tab.
  • Select a different screen refresh rate. This may vary depending on your monitor specifications. For example, you may need to upgrade to 60 Hertz even if your monitor supports 75 Hertz.
  • Remember, what works for you may be different, but this is a proven method for solving this particular problem. Feel free to experiment with different settings to find the one that will solve your problem.

    Also Read: Do Acer Monitors Have Built-in Speakers?