LG Monitor Not Detected – Causes & Fixes


Keeping your monitor up and running is the fundamental prerequisite for using a PC peacefully. If your monitor keeps causing hindrance in your experience, there’s hardly anything you can do productively on the PC. Users focus on reputed brands like LG and Dell to avoid such issues. However, a few users have recently shared that their LG monitor is causing issues. 

LG Monitor not detected is a common problem shared by many product users. Now what can you do? The only thing to do now is to fix the issue from its roots. But how? Well, that is where this post will assist you. 

In this blog, we bring you fixes to help resolve the LG monitor not detected issues. But first, let us identify what causes the issue and why this is a common problem.

What Causes LG Monitor Not Detected Issue on Your PC?

The error is a common problem faced by users worldwide, as you can find many ongoing discussions about ways to fix LG monitors not detected.

Screenshot of No signal on LG Monitor issues faced by users

One thing that has come out of these discussions is that the issue appears both in primary and secondary displays. 

The monitor not detected issue with LG devices in particular only occurs due to the following factors – 

  1. The cables are not connected properly. 
  2. The monitor has malfunctioned and is no longer working. 
  3. Issues with the GPU drivers to support output.
  4. Problems with the corresponding power source.
  5. Outdated operating system. 

If you have any of the issues bugging your PC, the monitor not turning on with your LG device will cause hindrance. Do not worry, as in the next section; you are going to find ways to identify if any of the above issues is causing the error and ways to fix them too. So without further ado, let’s jump straight to the fixes for the LG monitor not working properly.

Read Also: Acer Monitor Not Working: Possible Fixes

5 Ways to Fix LG Monitor Not Detected – WORKING!

Fix 1- Check for Physical Malfunctioning

Simply run a quick inspection of all the connections, including your input cables and the power cable. Physical issues are crucial as if the connection and ports are at fault; no technical fix will be able to resolve the issue. 

  • Check if the cables you use to connect the monitor to your device or the monitor with the power supply are properly connected.
  • Ensure the ports are not loose and the connections are solid enough to withstand the requirements. 
  • Sometimes, the issue also lies in the cables themselves. Check if the monitor light is coming up. 
  • If yes, then the power cable is OK.  
  • The last thing to do now is to change the input cable to see if the not detected issue is resolved. 
  • If you have access to another PC, try using the same monitor with it to check if it is the PC’s issue or the monitor’s error. 

If in any of the checks you come across that, the issue lies with the monitor’s hardware, call in customer support and get it fixed. However, if none of these issues come out to be the reason behind your LG monitor not working properly, move on to other fixes given below. 

Fix 2 – Power Reset Your Monitor

Resetting your monitor by draining any power can help you re-run it as a brand-new device. Simply – 

  • Turn off the power supply of the device. 
  • Remove any connections with the power supply or CPU. 
  • Leave the monitor without any connection for 10-15 minutes. 
  • Before reconnecting the power supply, press and hold the power button for 10 seconds.
  • Connect the monitor back to your device.

This will help your device run as smoothly as a new one, as the internal components will reset after the loss of all the power supply they had.

Fix 3 – Update Your Operating System

Sometimes the issue is with the compatibility of the connected devices and the operating system. The more recent your operating system is, the better it is for the hardware that you use. Hence, always keep Windows updated. Here are the steps to update Windows – 

Step 1 – Press Windows + I to open System Settings.
Step 2 – In Settings, look for the Windows Update option.

click on Windows Update

Step 3 – You may find the Check for Update button in the Windows Update options that’ll allow you to fetch the latest version of the operating system.

checking for updates
Step 4 –  Let the updater find the latest versions available. As soon as it finds the updates, install them.
Step 5 – Restart your PC to update the system and ensure the latest updates have been installed. 

Once you have made the updates, reconnect your LG monitor to see if the PC detects it. 

Read Also: Fixed – No DP Signal From Your Device Monitor (Dell)

Fix 4 – Run Hardware Troubleshooter on Windows

If updating Windows did not work, try running the hardware troubleshooter on Windows. It is not usually available with regular troubleshooters in system settings. Hence you can follow the given steps to do so – 

Step 1 – Go to the start menu and search for Command Prompt.

search for Command Prompt

Step 2 – In the Command Prompt options, click on Run as Administrator.
Step 3 – After opening the CMD window, use the following command to open the hardware troubleshooter – 

msdt.exe -id DeviceDiagnostic

DeviceDiagnostic command in CMD windows

Step 4 – In the opened troubleshooter, simply follow the instructions available, and you can troubleshoot the problem smoothly.

hardware and devices

The troubleshooter will find and fix any issue causing the LG monitor not to detect issues on your PC.

Note : In Windows 11, the troubleshooter might not work as effectively as the tool is soon to be retired.

Fix 5 – Update GPU Drivers for Better Compatibility

Sometimes, monitor compatibility also experiences hindrances due to the outdated nature of the drivers. Video, graphics, and GPU drivers are similar and responsible for properly functioning connected output devices for visuals. 

Keeping these drivers updated is important. If you are looking for an easy and effective way to update them without going through many complicated steps, we recommend you use Advanced Driver Updater. Here’s what you need to do – 

Step 1  – Download and install the Advanced Driver Updater from the link below. 

Step 2 – Run the application to find the Start Scan Now button. This allows you to scan your PC for outdated drivers.

start scan using advanced driver updater

Step 3 – The scan will review all the installed drivers and compare them to the driver database.
Step 4 – The outdated drivers that it finds in the scan are instantly shown on your screen.

outdated drivers found

Step 5 – Click on Update All and let the tool take care of fetching and installing the updates while you sit back and relax.

By the end of this process, your entire PC will have updated drivers. You can disconnect and reconnect your monitors to ensure everything begins from scratch. These updates can be of great help to you for running your PC smoothly.

LG Monitor Not Working Error FIXED!

The above-shared fixes are everything you need to get rid of the LG monitor not detected issue. For any connected device, a monitor plays a vital role. Hence, it becomes your responsibility to ensure that it works properly.

To do so, you may require proper fixes, and hence, it is better to be ready with ways to troubleshoot than struggling with the errors. Hopefully, this blog will help you eliminate issues with your LG monitor. If you have any other queries, contact us via the comments section. 

Thanks for reading, Good luck!

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About The Author

Dishank Sharma
Dishank Sharma

A creative tech-writer who loves to explore latest tech-trends & convey them to his readers in the simplest way possible. He loves to blend the crispness of technology with a pinch of creativity while curating best practices for the readers. In his free time, he likes to scribble poetry, listen to rap & travel.

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