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Why is there a black line on the monitor? Quick Fix

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  • 6 min read

Encountering unexpected issues like a black line on your monitor can be frustrating. Whether you’re working on important tasks, gaming, or simply browsing the web, such anomalies disrupt the viewing experience.

This article discusses the causes of the black line on your monitor and 12 fixes to help you resolve the back line issue on your monitor.

Below we have discussed:

Also read: Fix: Why do my monitors keep going black?

What causes this issue?

There are various reasons that might cause the black lines on your monitor and the most common of them are mentioned below:

  • Faulty Pixels: Dead or stuck pixels on the screen can often manifest as black lines, especially if they occur in a vertical arrangement.
  • Graphics Card Problems: Issues with your computer’s graphics card drivers or hardware can result in visual problems, including black lines or bars on the screen.
  • Loose or Damaged Cables: If the cables connecting your monitor to your computer are loose, damaged, or improperly connected, it can lead to display anomalies such as black lines.
  • Physical Damage: If your monitor has been physically damaged or bumped, it could result in visible lines or other display issues.

How to fix the issue?

Here are various fixes to help you resolve the issue:

Check connection

Make sure all of your monitor’s cables are properly connected to your computer. If any are loose, try reseating them. You may also want to try other cables or ports to see if there’s a problem.

Restart your computer

Sometimes, just restarting your computer can fix temporary issues or conflicts that cause display issues. Just restart your computer and see if the black line goes away after restarting.

Try another monitor

If you have another monitor that can be connected to your computer, connect it and see if you can see the black line on your new monitor. If the black line does not show up on your new monitor, this indicates that there is a problem with the graphics card in your computer or with the software settings in your computer. On the other hand, if you do not see the black line in your new monitor, then you have a problem with the original monitor.

Check your monitor while it’s disconnected

If you don’t have access to another monitor then you can try this fix. Keep the monitor on, disconnect the monitor from the computer, and check the screen for flickering or lines while the monitor is disconnected. Disorientation is a sign that the monitor is damaged.

Inspect for physical damage

Carefully examine your monitor for any signs of physical damage, such as cracks or pressure marks on the screen. If present, contact the manufacturer for repair or replacement options.

Update the graphics driver

To get the updated drivers for your graphics card, go to your graphics card manufacturer’s website and download the drivers for your particular model, or update the drivers automatically from your device manager. Here are the steps to update it using the device manager:

Step 1: Press the Windows+X and tap on the Device Manager option in the dropdown menu.

Step 2: Find and expand the Display adapters category and right-click on the driver.

Step 3: Click on the Update driver option in the pop-up menu.

Step 4: In the new window, click on the Search automatically for drivers option.

Check out our article to know how how to update the Nvidia graphics driver

Update the OS updates

Make sure your computer’s operating system version is up to date. In some cases, old operating system versions can affect monitor hardware or monitor drivers, causing display issues.

Check out our to learn how to update Windows

Clean the Computer and Monitor

Accumulation of dust on your computer screen and monitor can disrupt the flow of air and heat, which can lead to hardware problems. To remove dust from your computer’s vents, fans, screen and vents, use compressed air or a soft brush.

Remove magnets and electronics

If you have any other electronic or magnetic devices near your computer, monitor, or connecting cable, move them away as they may disrupt the connection and lead to the lines.

Change the refresh rate of the monitor

Sometimes, adjusting the refresh rate on your monitor can help with display problems. Check your computer’s display settings and see if adjusting the refresh rate will make a difference.

Check out our article to learn how to change the refresh rate of a monitor

Use a pixel-fixing tool

Use dead pixel fixing software to get rid of black lines on the screen. The issue may be corrected by calibrating and updating the pixels. You may be able to remove or reduce the black lines on the monitor by running the software and following its instructions. This will restore a clean and smooth display.

Seek professional help

If you’ve exhausted all DIY troubleshooting methods and the black line persists, consider seeking assistance from a professional technician or contacting the manufacturer’s support team for expert guidance and possible repair options.

Also read: How to use two computers with one monitor?

Akash Singh

Akash Singh

Akash is a law graduate who likes to go for bike rides on the weekends soul-searching for answers to his many existential questions. You can contact him here: