How to Fix Black Line or Horizontal Lines on Laptop, Computer Screen?

Black Line or Horizontal Lines on Laptop

First, reconnect the video cable.

The Blackline or Horizontal Lines on the laptop screen could be caused by an erroneous video cable connection. As a result, if the horizontal lines on the laptop HP issue develop, you should try reconnecting the video cable to the monitor.

Solution 2: Modify the Screen Resolution

The vertical or horizontal lines on the HP laptop screen are caused by an incorrect screen resolution. To troubleshoot the error, try changing the screen resolution.

Step 1: Press the Windows and I keys to enter Settings, then select System to proceed.

Black Line or Horizontal Lines on Laptop

Step 2: In the following window, select Display. Then, on the right, ensure that the scale, layout, and resolution are all set to the required values.

You may get here by right-clicking a space on the desktop and selecting the Display settings option.

Step 3: Check to see if the Blackline or horizontal lines on the laptop screen have vanished. If not, consider alternative options.

Solution 3: Install a new graphics driver.

Graphics Device Driver Error Code 43, Esc key not working, MHW graphics device crashed, and other errors can occur when drivers are out of current. It’s conceivable that the Black lines on the laptop screen problem are caused by an outdated driver.

If this is the case, you need to update your graphics driver. Here’s how to go about it.

Step 1: Press the Windows and R keys to open the Run window, then type devmgmt. msc and press Enter to launch Device Manager. You can also access the Device Manager by right-clicking the Windows icon and selecting the Device Manager option from the pop-up menu.

Black Line on Laptop

Step 2: Double-click the Display Adapters folder to expand it. Then, from the list of drivers, right-click on your graphics driver and select Update driver.click on Update driver

Step 3: In the following window, select a driver update method based on your needs. The graphics driver can be updated automatically or manually. Then, to complete the process, follow the on-screen instructions.

Run the Display Quality Troubleshooter.

For repairing monitor horizontal lines, use the built-in Windows program Display Quality Troubleshooter. You can use it by following the instructions below.

Step 1: In the Run window, type control and hit the Enter key.

Black Lines or on Laptop

Step 2: In the Control Panel, select View by Large Icons and then Troubleshooting.

Step 3: Select View All from the left pane.

Horizontal Lines on Laptop

Step 4: Select Display Quality from the list of options. Then enter the admin password or grant rights if prompted. Then, to complete the process, follow the elevated instructions.

Solution 5: Run a Clean Boot.

If you still see a Black line or horizontal lines on your laptop after trying the options listed above, conduct a clean boot. If the monitor works perfectly in a clean boot, it means that something is interfering with the display. Then you must manually remove it.

Step 1: In the Run window, type msconfig and press OK.

Step 2: Go to the Services tab in the System Configuration window and tick the Hide all Microsoft services box. Then choose Disable All.

Horizontal Lines on Laptop

Step 3: Select the Startup tab and then Open Task Manager.

Black Lines on Laptop screen

Step 4: Select Disable from the Startup Programmes menu. Repeat this procedure to disable all of the startup programs listed. Then exit Task Manager.

Step 5: In the System Configuration window, click OK, and then restart your computer. If your computer displays normally, re-enable the programs you disabled one at a time until you see the horizontal line on your laptop screen again. Then, manually uninstall the program.

How can I remove Black lines or horizontal lines from my laptop screen? You have been shown the top five solutions. Choose one to resolve the problem right away!

More Info About Fix Black or Horizontal Lines on a Laptop, Computer Screen

This post will guide you through the various diagnostics and adjustments you may make to your computer and monitor to find out the cause of the lines and learn how to get rid of them.

Why Do Lines Appear on a Monitor Screen?

On a computer monitor, black lines can be brought on by:

  • Overheating or physical damage to the monitor and related wires
  • Conflicts between the screen and the preset screen resolution  Incorrect refresh rate settings
  • While some can be fixed easily, others could require a trip to the shop.

How to Remove Screen Lines on a Computer

These are the top methods for eliminating Black lines or horizontal lines from your monitor or computer screen.

1. Turn off and on your monitor. Although it seems like a straightforward fix, it usually fixes screen issues like black lines.

2. Shut off your computer. This can fix several technical problems, such as your screen’s flickering lines.

3. Switch to a different monitor. This can help you identify whether the lines are coming from the screen on your computer or the computer itself.

4. Check your monitor when it is turned off. This can help you identify whether the lines are coming from the screen on your computer or the computer itself.

5. Remove and replace the keyboard. If the keyboard on your computer is detachable, take it out, give it a few seconds, and then put it back in.

6. Shut down and restart your laptop. After closing the screen of your laptop and waiting a short while, carefully open it again. As soon as you open the screen, watch for the moment when the lines start to appear. If only one angle is where the lines appear, damaged wiring is probably to blame.

7. Place your laptop on a flat surface. Soft materials, such as a blanket or tablecloth, might overheat and create lines and flickering on the screen.

8. Install the most recent operating system updates. Older software conflicting with newer technologies could be the source of lines on your computer screen.

9. Verify the monitor’s connection twice. Make sure all of the wires are firmly secured while examining the cords, and look for any changes in the quality of the screen image. It might need to be changed if you notice that the image gets better or worse when you touch the attached cable.

10. Cut the monitor’s cord. Take the external monitor away from your computer for a short while and then plug it back in if you’re using one.

11. Take out any electronics and magnets. Relocate any additional electronics or magnetic devices that are close to your computer, screen, or connected cables since they may cause interference with the connection and lines.

12. Check to see if your monitor and computer are clean. Visual distortions could be the result of your computer and display overheating due to dust.

13. Adjust the resolution of the screen. Whether it’s a Mac or Windows computer, adjust the screen resolution.

14. Verify the calibration of the monitor. This process will optimize your monitor for use with your computer and its surroundings and should only take a few minutes.

15. Adjust the monitor’s refresh rate. When it comes to lines and screen flickering, changing the refresh rate can help. 

16. Verify that the drivers for your devices are up to date. Check for updates to the drivers for the profiles connected to your screen and monitor.

17. Use a troubleshooter in action. Navigate to Settings > System > Troubleshoot > Other troubleshooters to launch the Video Playback and Programmed Compatibility troubleshooters. Make sure to run any further troubleshooters that are recommended to you.

18. Return your monitor to its original configuration. Use the built-in settings of the external monitor or screen, not the ones on your computer, to return it to factory settings if you’re using one. A physical Settings or Menu button on the computer monitor provides access to these options.

19. Speak with authorities for assistance. Ask the customer service representative of the manufacturer about a replacement or repair.

20. Invest in a fresh display or computer. If all else fails, it could be time to get a better display or a new computer.

FAQ,s

Q1: Why do I see black or horizontal lines on my laptop screen?

A: Black or horizontal lines on a laptop screen can be caused by issues such as a faulty video cable connection, incorrect screen resolution, or outdated graphics drivers.

Q2: How do I reconnect the video cable to fix the black lines on my laptop screen?

A: To fix black lines caused by a video cable issue, follow these steps:
Reconnect the video cable to the monitor.
Ensure a proper connection and check if the lines disappear.

Q3: How can I modify the screen resolution to address horizontal lines on my HP laptop?

A: To resolve horizontal lines due to incorrect screen resolution:
Press Windows + I, select System and then choose Display.
Adjust the scale, layout, and resolution to the required values.

Q4: What should I do if updating graphics drivers is required to fix black lines on my laptop screen?

A: To update graphics drivers:
Press Windows + R, and type devmgmt. msc, and press Enter to open Device Manager.
Double-click Display adapters, right-click on your graphics driver and select Update driver.

Q5: How do I run the Display Quality Troubleshooter to fix monitor horizontal lines?

A: Follow these steps to run the Display Quality Troubleshooter:
Type “control” in the Run window and press Enter.
In the Control Panel, select Troubleshooting, then View All, and choose Display Quality.
Follow the on-screen instructions to troubleshoot and resolve the issue.

Q6: What is a clean boot, and how can it help fix black lines on my laptop screen?

A: A clean boot helps identify interfering programs. Follow these steps:
Type “msconfig” in the Run window and press OK.
In System Configuration, go to the Services tab, hide Microsoft services, and disable all.
Disable startup programs in Task Manager.
Restart your computer and re-enable programs one by one if the lines disappear.

Q7: What are the top methods for removing black lines or horizontal lines from a computer monitor?

A: Here are some methods to eliminate lines from a computer monitor:
Turn off and on your monitor.
Shut down your computer.
Switch to a different monitor.
Check your monitor when turned off.
Remove and replace the keyboard.

Q8: How can I prevent or troubleshoot black lines on my laptop screen in the future?

Keep your laptop on a flat surface to avoid overheating.
Install the latest operating system updates.
Check monitor connections and cables.
Run troubleshooters and perform regular maintenance.

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