Second Monitor Detected But Not Displaying – Working Fixes

Running a multi-monitor setup is a goal for many of us PC enthusiasts. Yet, it can be a real letdown when that second monitor isn’t cooperating, even when the computer acknowledges its existence.

The culprit could be a misstep in your computer’s graphics card settings or a hardware hiccup with the monitor itself. Whatever the case, rest assured I’m here to guide you through some straightforward solutions that could easily rectify this predicament.

So, if you’re on the hunt for ways to troubleshoot a second monitor detected but not displaying, you’re in the right place. Stick with me, as I’m about to dive deep to unearth the optimal fix.

Before starting to fix the “Second monitor detected but not displaying” issue

Here is a quick checklist to consider

  1. Have I encountered this issue before? Is this a problem exclusive to this particular monitor, or have I also dealt with it on other screens?
  2. Consider if others have reported similar problems. This could indicate a broader issue.
  3. If this is your first time facing this issue, it could be an issue with the monitor itself, the cables, connectors, or even the graphics card.
  4. If this is a recurring issue, think back to the steps you used to resolve the monitor problem in the past.
  5. Proceed to perform these troubleshooting steps and see if it resolves the problem.
  6. If the problem persists, it’s likely there’s an issue with the monitor, cable, or your system.
  7. If this is a common problem within your office or company, it may be time to call tech support for assistance.
  8. If you’re using the monitor for the first time or you’ve used it before but suddenly stopped working, chances are it is bad, and you might need to get a new one. Here is LG 27UP850 that just might make a suitable replacement. So be sure the monitor is working before trying these fixes to save time.
Second Monitor Detected But Not Displaying

Fix 1: Check resolution and drivers

As a Windows user, you should head over to the “Device Manager” and check if your second monitor appears in the list under displays, equipped with the correct drivers. There’s a chance you might need to download and install the right drivers for your display to function properly.

Second Monitor Detected But Not Displaying

Let’s try a different approach if this doesn’t do the trick. Start using a very low resolution to see if the monitor responds. If you get a picture at these low resolutions, gradually increase them until you hit a roadblock. This strategy will help identify the resolution threshold where the monitor ceases to work.

Fix 2: Try around with the ports and inputs

Give this a shot – you might need to switch the input on your monitor. Monitors with multiple display adapter ports on the back can often switch inputs, allowing you to flip from computer to TV, for instance. Usually, these monitors default to the TV setting.

Second Monitor Detected But Not Displaying

Even if you’re having trouble getting a signal from your monitor, the buttons on the sides, bottom, or back of the monitor should still function. One of these might be labeled ‘input’, allowing you to toggle between different settings. Give it a try and see if it resolves your issue.

Read also: Getting the Acer Monitor No Signal Issue? Causes, Best Fixes

Fix 3: Check Video card issues

While some monitors are configured to auto-adjust for input, you might need to manually alter it on the monitor’s On-Screen Display (OSD) if it has been modified.

You may also have to delve into the settings of your video card manufacturer and ensure that you’re either extending or mirroring the desktop, based on your preference.

If these steps don’t yield results, you might consider updating your video card drivers as a last-ditch effort. You can check for driver updates through Microsoft. And remember, as an absolute final resort and only if absolutely necessary, you could consider updating your BIOS.

Second Monitor Detected But Not Displaying

But heed my caution: I don’t recommend performing a BIOS update unless it’s critical due to the risks involved. You can update your drivers using tools like Windows Update or HP Support Assistant.

Read also: What Is Ghosting On a Monitor?

Fix 4: Try a system restore

  1. Start by opening the Start menu and searching for “Create a restore point“. Select the top result to open System Properties.
  2. In System Properties, click on the “System Restore” button.
  3. In the next window, click “Next” and select the restore point you wish to use.
  4. Remember, clicking “System Restore” will revert your PC settings to your system’s last known good configuration.

But hold on, there’s an important note to consider before using Restore Point: you first need to enable it. This allows Windows 10 to create restore points for your system. Here’s how to do that:

  1. Go back to the “Create a restore point” window in the System Restore feature of your computer.
  2. Ensure it’s enabled from this screen. This feature is only accessible from system drives or computers with an installed OS.
Second Monitor Detected But Not Displaying

With these steps, you’re well-equipped to use the Restore Point feature effectively and safely.

Fix 5: Play around with settings adjustments

  1. Start by examining 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 hit the “Detect” button.
  2. If the above step doesn’t yield results, press the Windows key + X to open the quick access menu and select “Device Manager“.
  3. Once in the Device Manager, double-check that your graphics card is being detected by Windows. Look under the “Display Adapters” and “Monitors” sections. Keep an eye out for any errors marked with a yellow caution sign.
  4. Head back to your dual monitor’s Display Settings by right-clicking on an empty area of your desktop.
  5. Select the monitor that’s giving you issues (for instance, it could be Monitor 2).
  6. Try clicking “Identify”. This might not always work but is worth a shot.
  7. Scroll down and click on “Advanced Display Settings” at the bottom of the page.
  8. Click on “Display adapter properties for Display-2” (or whichever monitor is problematic).
  9. Switch to the Monitor tab.
  10. Select a different screen refresh rate. This may vary based on your monitor’s specifications. For instance, you might have to switch to 60 Hertz even if your monitor supports 75 Hertz.

Remember, what works for you might be different, but this is a proven method to troubleshoot this particular issue. Don’t be afraid to experiment with different settings to find the one that resolves your problem.

Read also: Do Acer Monitors Have Built-In Speakers?