LG Monitor Not Turning On (11 Easy Fixes!)

I have owned a home office monitor from the company for many years and have been very happy with it.

There are a number of different issues that I have run into with my electronic device, having said that, I have used it for a long time.

My monitor won’t turn on despite multiple attempts to boot my device, it’s one such problem that I have encountered a few times now.

This issue appeared to come out of nowhere in all instances.

I discovered a number of proven troubleshooting steps that seem to cover the vast majority of models after digging through a number of manuals and trying every fix I could find.

Double check that the power button is on, and inspect the power and display cable connections, if you don’t see your monitor turning on.

Make sure the monitor is set to the correct input and that the display resolution is lowered. If all else fails, you should perform a factory reset.

Potential issues with the monitor are not the only thing that may be causing the problem.

If you want to confirm that the issue is related to your computer, you can use a different device to test the monitor.

If the monitor works with a different device, update the originally connected PC’s graphics driver and BIOS and ensure display cable is properly plugged into the graphic card. Finally, reinsert the RAM sticks and reset the CMOS/BIOS.

Let’s quickly review step-by-step instructions for each of these troubleshooting steps in detail.

Step 1: Confirm Power Button Is Set To ‘On’

Most users turn their monitor on once and rarely need to do it again. It’s not uncommon to come across this issue because the power button is not set to off.

It seems like a very obvious fix and it seems too easy to fix. But before we start diving into more involved steps, make sure to double check this.

The On button can be found on the front, bottom, or side panels of the monitor frame. It’s on the right hand side more often than not.

If you want to make sure the monitor is in the on position, turn it on and off at the same time.

Step 2: Inspect Power Cable

Ensuring that the power cable is securely connected on both ends is a quick fix to check off the list.

The power cord head won’t be securely inserted into the power port if the power sockets gets loose over time.

Take the time to check the connection on the back of your monitor and the power outlet on the wall.

If there is damage to your power cord, be sure to look at it.

Step 3: Inspect Display Cable

Ok, let’s get it out of the way. You are pretty confident that the power is turned on and the power cable is secure.

And yet, there are no signs of life. We will stick to the cable theme and keep going. It’s equally important to make sure the display cable is properly connected.

The most common display cables are the ones that are used for display.

Even if the connection is slightly broken on either end, a bunch of different failures, including volume issues and the no signal errors, can be caused.

If you can’t connect the cable, try disconnected and reconnected.

You should tighten the screws all the way to prevent future issues if you are using a VGA or DVI cable.

If there isn’t any change, you should use a different display cable than the one you’re currently using.

Step 4: Adjust Video Input Source

If you have the monitor set to the wrong video input source, it doesn’t matter if you make sure the video cable is securely connected.

To confirm that the correct input source is selected, you need to adjust your display.

Before you can do this, you need to determine the type of video cable you are using.

You can find the Input button on your monitor once you have identified the correct video cable.

On the front, bottom, or side panel of your monitor frame, you can find the Input button.

If you don’t identify the input that matches your display cable, you need to adjust the input options.

If your on screen display is not working, be sure to try and get it to work again.

Step 5: Lower Display Resolution

Your PC can relay back to your monitor a range of possible display resolutions.

If your computer has a display resolution that is higher than what your monitor can handle, it is important to check it out.

This can lead to an out of range error if you have a monitor. Reboot your computer with Safe Mode.

If you are in Safe Mode, your PC will have a lower display resolution.

You can choose a lower standard display resolution if you go into your computer’s resolution settings.

I recommend you start with the lowest resolution range.

Allow for 30 seconds between updates to see if the monitor is still on. Try the next highest range, if it does.

Step 6: Restore Factory Default Settings

Sometimes changing the factory settings on your monitor is all it takes to get it back up and running.

To reset your monitor, you will need to open the OSD main menu and navigate to the Factory Reset option.

Depending on the model you own, the navigation pathway can be different.

The easiest thing to do is to enter your model number into the manual and follow the instructions.

Step 7: Test Monitor With Another Device

The first six steps are mostly about fixing your display. There is a possibility that your connected device is causing the problem if none of these fixes have worked.

You can confirm this by using your monitor with another device. This can be a computer, a game console, a laptop, or both.

If your monitor display works, then you know the problem is with your hardware. The following steps are not very complicated.

Some of the fixes below require you to open up and manipulate the internals of your PC.

It is possible to bring your PC to a local repair shop if you are not comfortable with that level of problem resolution.

Step 8: Update Graphics Driver And BIOS

The first thing to look for if your PC is malfunctioning is whether or not your graphics driver and/or operating bios version are up-to-date.

To find out if this is true, you will need to connect your desktop PC to a different display. Simply use the laptop screen for this step if you are using a computer.

  • Update graphics device for Windows.
  • Update BIOS for Windows.

Step 9: Ensure Display Cable Is Plugged Into The Graphic Card

The majority of desktop PC’s have a separate graphic card unit with corresponding connections located on the back of the device.

It is amazing how many times users plug their display cable into their computer instead of their graphic card port.

If your connected device is a desktop computer, make sure you pay attention to this PC display connection point.

Step 10: Reinsert Your RAM Sticks

Your random access memory sticks may not be establishing a proper connection, which is another hardware related issue to consider.

Sometimes a RAM related issue will result in not enough power being delivered to your keyboard and/or mouse.

If one or both of these devices are malfunctioning, that is a good sign you are dealing with a RAM error.

If you are using a laptop, you need to remove the back case to access the memory sticks.

Remove each of the sticks and then insert them in a different order than you found them.

You should be able to resolve the issue when you boot back up.

Step 11: Reset CMOS/BIOS

All the essential functions of your computer are managed by the Basic Input/Output System (BIOS) firmware.

Which is powered by the Complementary Metal Oxide Semiconductor (CMOS) battery in your PC.

Taking out the battery will cause the system to change back to its previous configuration.

Sometimes a reset is all that is needed to solve the problem.

If you are using a laptop, be sure to first shut off your PC, plug it in and then remove the battery.

You can open the back of the device to access the battery on the board.

The power button should be held down after the batter has been removed to drain the remaining power.

You should put the battery back into your PC after about a minute.

If the display on your computer isn’t working, you need to restart the computer.

Final Word

If you discover that your monitor isn’t turning on, follow these 11 steps in order:

For users who are still having issues despite attempting each of these steps.

You can try contacting LG customer support at 1 (800. 243-0000 for further assistance.

If the hardware issue is too severe to fix, look up the terms of your warranty policy before making any purchases.

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