Blue Lines On Monitor

Why There Are Blue Lines On Monitor? First Learn Then Solve It! – Easy to Fix

There are three primary causes of blue lines on the monitor: a malfunctioning display panel, a poor connection between your computer and the display, or incorrect data received by the display. However, why did this happen?

LCD panel circuitry malfunction is a common reason for blue lines appearing on display. To access the LCD’s electronic board, go to the LCD monitor top left corner. Try applying pressure to either side of the insight camera without lifting the lid and see if there is a difference in the presented footage.

This article will learn about the many issues, causes, and remedies.

Why There Are Blue Lines On Monitor


Don’t worry about the irritating blue lines on the screen. First, find out what’s causing the issue before looking for a remedy. In many cases, the reasons for stripes and flickering are related. So we’ve compiled a list for you:

  • Your drivers may be out-of-date or have been installed wrongly.
  • Insufficient electricity is short-circuiting the monitor.
  • You may have a problem with the cable connections.
  • There is an issue with your monitor’s refresh rate that has to be fixed.
  • It seems that you have a video or graphics card problem.
  • Incorrect resolution setting on your monitor.

More Reasons Why Are There Lines on Your PC

  1. Damaged Video Cable: A damaged or faulty video cable is one of the most common reasons for blue lines on a monitor. Over time, the cable can become worn or damaged, causing interference in the signal, resulting in blue lines on the screen.
  2. Outdated or Incorrect Graphics Card Drivers: Your graphics card drivers play an important role in rendering graphics on your screen. If your drivers are outdated or incorrect, it can cause display issues such as blue lines on your monitor.
  3. Screen Damage: If you’ve dropped or knocked your monitor, the screen may be damaged, resulting in blue lines on the display.
  4. Monitor Malfunction: In some cases, a malfunctioning monitor can also cause blue lines on the screen.
  5. Power Supply Issues: Power supply issues can cause voltage fluctuations, leading to display problems like blue lines on your monitor.

How To Fix The Issue Of Vertical Blue Lines

Method 1: Download and Install the Latest Drivers

Using Windows Device Manager, you may accomplish the following:

  1. To open the run box, simultaneously press the Windows logo key and R on your keyboard.
  2. Enter devmgmt.msc and press Enter.
  3. Click the OK button.

Keep in mind: Device Task Manager may be accessed in various methods, some specific to your Windows version. Even Windows 7 and Windows 10 may benefit from the strategy above.

Why There Are Blue Lines On Monitor

  1. To view all the devices in a category, choose it and expand it by clicking on it.
  2. Then, choose Update Driver Software from the shortcut menu when you right-click on the device.
  3. To update your driver, click the Update Driver button.
  4. Select the option to search for updated driver software automatically.

Important: The video driver you now have installed is up-to-date but may not be evident if Windows fails to locate an updated driver for your device. There is a problem with the Windows Device Manager when identifying outdated drivers.

We are convinced that the software-related vertical blue line problem will be resolved if we do the outlined steps. This is a safe way since it only retrieves WHQL-certified drivers.

Method 2: Update Windows Software


control panel

  • Open the Control Panel to begin the process of updating Windows.
  • To learn how to access the Control Panel, look at this tutorial on Windows Essentials. Search for “update” in the Control Panel’s search box.
  • Click Check for updates under Windows Update.
  • Windows may take a while to find the necessary updates.
  • If there are any available updates, you will be prompted to apply them after completing the scan.

Installing all of the patches may take some time. When the process is complete, you may step away from the computer and do anything else until it is done.

Windows will probably ask you to restart the device once it’s finished. Windows will notify you if there is anything further you need to do; otherwise, you are up to date!


  • Open the App Store, then choose Updates at the top of the page.
  • Updates for macOS will take precedence over all others.
  • Individual app updates may be applied one at a time, or all updates can be used at once.
  • You may check for updates to macOS and applications using Apple’s excellent support website.

Method 3: Check Your Hardware

That’s difficult to tackle hardware issues without the proper equipment and knowledge.

The first possibility is that the blue lines result from a loose display wire, which might cause them.

Screen-to-base-of-laptop cable, which travels through the spinning hinge of your laptop.

The cable may get misplaced over time due to the frequent opening and shutting.

Method 4: Check all Cables

Ensure that all of your cords are correctly connected. Gray lines, pink lines, and green lines on the monitor may all be caused by a slack ribbon cable.

Unplug your display from the input device and inspect the ports for damage before returning it. You may tell whether the pins in these connections are bent or damaged by looking at them.

Double-check the HDMI cable if you’re using more than one screen. Consider the most OK dual monitor mount if you want to organize your workspace better.

To avoid damaging a VGA terminal, never use a metal item such as a paperclip.

Method 5: Adjust the Monitor Settings


Here are a few adjustments that can be made to the monitor settings:

  1. Change the Resolution: The resolution is the number of pixels that the screen can display. Higher resolution means more pixels and a sharper image. However, if the resolution is too high, it can cause display issues such as blue lines. To fix this, reduce the resolution of the screen and see if the blue lines disappear.
  2. Adjust the Refresh Rate: The refresh rate is the number of times the screen refreshes per second. A low refresh rate can cause flickering and other display issues. Increasing the refresh rate can help fix blue lines on the screen.
  3. Change the Color Settings: Changing the color settings can also help fix blue lines. Adjust the contrast, brightness, and gamma settings to see if the lines disappear.
  4. Reset the Monitor: Sometimes, the monitor settings can get corrupted, causing display issues. To fix this, reset the monitor to its default settings.
  5. Clean the Monitor: Dirt and dust on the screen can cause interference in the display, leading to blue lines. Clean the screen with a soft, dry cloth to remove any dirt or dust.

It’s important to note that not all monitors have the same settings, and the settings can vary depending on the model and brand. Refer to the monitor manual or the manufacturer’s website for instructions on how to adjust the settings.

In addition, it’s recommended to make one adjustment at a time and test the screen after each adjustment. This will help identify which setting is causing the blue lines and make it easier to fix.

Tips To Get Rid Of Any Lines On Your Monitor

no signal

  • Make adjustments exclusively to the controls described in the product’s operating instructions.
  • The power cable should not be rested on in any way. Don’t trample on the wire.
  • Avoid dropping or placing the external monitor screen on an unstable surface.
  • To prevent this device from malfunctioning, do not open the monitor cabinet.
  • The monitor should be placed near an outlet that is conveniently accessible.
  • The monitor should be kept from direct sunlight, heat, and moisture.
  • To improve the monitor’s performance and prolong its lifespan:
  • When you’re not using the display, turn it off.

More About The Topics

How Do I Fix Blue Lines On My Monitor?

To get rid of the blue lines on your screen, you will need to upgrade your Windows software (Intel Driver updates now come with OS maintenance releases).

Check for new updates in the updates and security section of the Settings app (Windows Key + I or notification bar).

Why Is There A Blue Horizontal Line On My Laptop Screen?

Using the improper graphics card driver or one out of date might cause this issue. As a result, you should check whether updating your graphics driver resolves your issue.

Using Driver Easy, you may automate updating your driver if you don’t have the requisite time, patience, or expertise.

What Is Causing LCD Displays to Display Blue Vertical Line?

LCD Displays to Display Blue Vertical Line

Circumstantial failures are the most common cause of vertical or horizontal lines that don’t vanish after simple troubleshooting.

When a driver IC (flexible circuit board) and LCD screen glass have an open circuit connection, it’s likely to cause a smudged image.

How Do I Get My Computer Screen Back To Normal?

  • Settings can be found in the Start menu.
  • To access the SystemSystem, click on SystemSystem.
  • Modify your menu screen resolution and scale in computer monitor to make it seem its best.
  • Alternatively, click the power button to restart, if you’re having trouble seeing what’s on the screen, wait 15 seconds, and it will automatically revert.

How Do I Get Rid Of The Blue Line In Windows 10?

The blue box that appears around whatever you click on or tab to is a sign that Narrator is operating.

Hold down the Caps Lock key and hit the Esc key to disable the feature. A permanently disabling Narrator is also an option.

Is There A Way To Fix Dead Pixels Along A-Line?

Run a pixel-repair application to see if you can free the trapped stuck pixel from their “on” state. It’s common to get them on the internet for free (see Resources). To get the frozen pixels to move again, these applications usually cycle through various colors, either throughout the whole screen or simply in the problematic region.

Finally, What To Do For Monitor’s Blue Lines

dual monitor

Blue lines on monitor problems can be solved in a variety of ways. For instance, you may want to update your drivers. Many of the reasons for a problem are outside your control.

This might also be the problem since the LVDS (video cable) is a conduit that goes through the hinge of the MBP and can be broken or have a loose connection at the connection ends. When sliding the lid up and down, a defective LVDS connection typically results in a change in the visual signal on the screen.

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