Second Monitor Not Turning On [You Should Try This First]

If you are in a situation where your second monitor is not turning on, It is a frustrating experience, and it can be difficult to figure out the problem.

I know this from personal experience because one day, my second monitor wouldn’t light up, no matter how many times I tried turning it on or off again.

After much trial and error trying different solutions, I realized why my second monitor wasn’t working.

In this article, I’ll share with you the steps I took to fix my second monitor not turning on an issue, and hopefully, they will also help you.

Second Monitor Not Turning On [You Should Try This First]

Second Monitor Not Turning On

If your second monitor is not turning on, you can troubleshoot your monitor by checking the power button on your second monitor, damaged power and display cables, damaged ports and connectors, graphics card issues, reduce screen resolution, your computer’s power supply unit (PSU) is faulty display panel damage, your monitor’s backlight is faulty, or its motherboard is faulty. These are common reasons behind second monitors not turning on. Try diagnosing each of these components to identify and fix the issue.

Here is a step-by-step process to fix this issue:

  1. Check The Power Button
  2. Damaged Power and Display Cables
  3. Damaged Ports and Connectors
  4. Graphics Card Issues
  5. Reduce The Screen Resolution
  6. Your Computer’s Power Supply Unit (PSU) is Faulty
  7. Display Panel Damage
  8. Your Monitor’s Backlight is Faulty
  9. Monitor Motherboard is Faulty
Second Monitor Not Turning On [You Should Try This First]

1- Check The Power Button

When the second monitor is not turning on, the first step to troubleshoot this issue is to check the power button. 

Because the power button is the main source of providing electricity from the socket to your monitor.

This can be done by ensuring that the power cable connecting the second monitor to a power outlet is securely plugged in and that the power button on the second monitor is turned on.

It’s also important to ensure that any power switches on the second monitor or along its connection cords are in their proper “on” position.

Additional troubleshooting steps should be taken if checking the power button does not resolve the issue.

2- Damaged Power and Display Cables

Damaged power and display cables can be a common issue for second monitors not turning on.

Power cables can become damaged due to wear and tear or improper installation and handling.

Display cables are typically more sensitive, and even minor damage to any of their pins can cause the second monitor not to turn on.

If the power cable is found to be damaged, it needs to be replaced with a compatible cable that matches the second monitor’s power requirements.

Damaged display cables must also be replaced with a compatible model specific to the second monitor to ensure proper connection and functionality.

3- Damaged Ports and Connectors

Damaged Ports and Connectors can often be the underlying cause of second monitors not turning on.

If your second monitor is not powering up, the first thing to check is that all cables are securely connected to both the monitor and the computer ports.

If the connections appear secure, try using a different cable or port on your computer. 

Additionally, check for any physical damage to the ports or connectors themselves.

Bent pins, damaged port connectors, and other physical signs of wear can also be responsible for second monitors failing to turn on.

If the port or connectors appear damaged, replacing them with a new one is best.

If all cables and ports seem to be in working order, but your second monitor still isn’t turning on, your graphics card may need updating.

4- Graphics Card Issues

One potential issue that may be causing a second monitor to not turn on is an issue with the graphics card. 

The graphics card is responsible for powering the second monitor, and any issues can prevent the second monitor from functioning correctly.

Common causes of graphics card issues may include a lack of system resources, outdated drivers, too much power draw, incorrect settings or configurations, or physical damage to the card itself.

If the second monitor does not turn on when connected to the computer, it is likely due to an issue with the graphics card.

To diagnose any potential issues with a computer’s graphics card, users should first check for available updates for their drivers and software.

This can help ensure that all necessary components are up-to-date and functioning correctly.

5- Reduce The Screen Resolution

One possible solution for the second monitor not turning on could be to reduce the screen resolution.

This can be done by right-clicking on a space on the desktop and selecting “Display settings.”

Here, you can adjust your display resolution to an appropriate setting for your second monitor.

Depending on the type of second monitor, there may be options to tweak the color depth and refresh rate.

If reducing the screen resolution does not work, it may be necessary to check that the second monitor is correctly connected to the power outlet and video output port.

Additionally, it is worth checking that the second monitor is turned on (via its power button) and that its brightness is set appropriately.

6- Your Computer’s Power Supply Unit (PSU) is Faulty

An issue could cause the second monitor not to turn on with your Computer’s Power Supply Unit (PSU).

The PSU delivers the necessary electricity to components in a PC, including the second monitor.

Suppose insufficient power is supplied or the power supply is faulty.

In that case, components such as the second monitor will not be able to receive the correct amount of electricity and thus will not turn on.

It is important to ensure that all cables are properly connected and that the power supply unit meets all specifications for your system.

If you have checked all these factors and still experience issues with your second monitor, it may be time to replace your computer’s PSU.

Doing this yourself is not recommended, as it can be very dangerous and should only be done by an experienced technician.

7- Display Panel Damage

One possible cause of the second monitor not turning on may be display panel damage.

This is when a physical issue with the monitor prevents it from displaying any visuals. 

This could include loose connections, defective wiring, or physical damage to the display panel itself, such as cracks, holes, and other damages caused by impacts or dropping the monitor.

Other causes can include incorrect cable connections and faulty power supplies.

To determine if display panel damage is the cause of your second monitor not turning on, try connecting it to another device or computer to see if you get any visual output.

If there’s no response at all, then there is likely some form of physical damage to the display panel that needs to be repaired or replaced.

8- Your Monitor’s Backlight is Faulty

If your second monitor isn’t turning on, it’s likely the result of a faulty backlight.

The backlight is a lighting mechanism typically located behind the LCD, and it illuminates the pixels to create an image.

If this component has failed or becomes damaged, then no power will be able to reach the screen and cause it to turn on.

Common causes of a faulty second monitor backlight include physical damage from dropping, excessive heat exposure, or simply age-related wear and tear.

It’s important to note that not all second monitors will have accessible backlight housing.

This can make troubleshooting and repairs more difficult due to having limited access to potential parts replacements.

9- Monitor Motherboard is Faulty

If the second monitor is not turning on, it may be due to a faulty motherboard.

The motherboard can become damaged due to many reasons, such as overheating, physical damage, electrical surges, or failure of components.

Overheating is typically caused by components within the computer that are overworked and unable to dissipate their heat fast enough, causing them to overheat and damage the motherboard.

Physical damage can also occur if the computer is dropped or bumped in a way that causes components to malfunction or fail.

Electrical surges can happen for various reasons, including lightning strikes and power outages, which can cause irreparable damage to the motherboard.

Finally, failing components on older computers can cause multiple issues with powering second monitors and other hardware connected to them.

Conclusion

In conclusion, if your second monitor is not turning on, you can troubleshoot your monitor problem by following these steps:

  1. Check The Power Button
  2. Damaged Power and Display Cables
  3. Damaged Ports and Connectors
  4. Graphics Card Issues
  5. Reduce The Screen Resolution
  6. Your Computer’s Power Supply Unit (PSU) is Faulty
  7. Display Panel Damage
  8. Your Monitor’s Backlight is Faulty
  9. Monitor Motherboard is Faulty

If you have tried all these steps and have not found any solution, it is best to contact customer support.

They will give you the solution to troubleshoot your monitor sound problem because they have a qualified team.

If your monitor has a serious problem, it is best to buy a new monitor instead of wasting your money on an old monitor.

FAQs

Why Is My Monitor Not Displaying?

Your monitor’s backlight may have gone bad, causing the monitor to not display.

To diagnose this problem, check for any visible signs of damage or loose electrical connections in the backlight circuitry.

If everything looks okay, you may need to open up the monitor and check for any component failure preventing it from displaying properly.

If all other possibilities have been exhausted, you may need to replace or repair your monitor’s backlight.

Why won’t my dual monitor turn on?

One of the most common reasons why a dual monitor won’t turn on is due to damaged ports or connectors.

The monitor may be connected to the computer via a VGA cable, DVI cable, HDMI cable, or DisplayPort cable, and any of these cables may be damaged.

Damaged cables can prevent the monitor from properly connecting to the computer and receiving power.

If one of the cables is damaged, replace it with a new cable to see if that resolves the issue.

If a new cable does not fix the problem, there may be an issue with the port or connector on either the monitor or computer end.

How do I get my second monitor to wake up?

Move the mouse or press any key on the keyboard to get your second monitor to wake up.

You can also try pressing your computer’s power button to reset it and see if that wakes up your second monitor.

Additionally, you may need to check your graphics card software’s settings to ensure that multi-monitor support is enabled.

Finally, manually move/resize windows across two monitors to refresh their connection.

Why did my monitor go black and won’t turn on?

You may be experiencing a hardware issue with your monitor or screen.

It could be caused by a variety of things, such as a faulty power supply, loose connections between the monitor and computer, problems with the video card in your computer, or simply an outdated display driver.

If possible, connect a different monitor to see if it works properly.

If not, disconnect all cables from both devices and reconnect them securely. Then restart your computer and see if that helps solve the problem.

Why is my second monitor in standby mode?

There could be several reasons why your second monitor is in standby mode.

It could be due to a lack of power supply or a faulty connection between the two monitors or from the computer itself.

It may also be caused by outdated software drivers or an issue with the video card settings.

To troubleshoot this problem, check all physical connections and ensure they are securely plugged in, update the video card drivers if necessary, and reset the display settings on both monitors.

Why won’t one of my monitors turn on?

If one of your monitors won’t turn on, several possible causes could exist. 

Check the power cable to ensure it is securely connected to the monitor and power outlet. Check for any visible damage or frayed wires on the cable.

If the cable appears in good condition, try plugging it into a different outlet to see if this resolves the issue.

If neither of these solutions solves the problem, you may need to replace the power cable or seek professional help.

How do I get my monitor out of power save mode?

Here is a step-by-step process to fix this issue:

  1. Press any key or move the mouse to wake up the monitor.
  2. Right-click on the desktop and select “Display settings.”
  3. Scroll down and click on “Additional power settings.”
  4. Select “Change plan settings” for the power plan you’re currently using.
  5. Choose “Never” for the “Turn off the display” and “Put the computer to sleep” options.
  6. Click “Save changes” and close the power settings window.

Disabling power saving mode on the second monitor may vary according to your monitor model.

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