FIX: Green lines on Windows 10 laptop [Easy guide]

Tashreef Shareef
by Tashreef Shareef
Windows & Software Expert
Tashreef Shareef is a software developer turned tech writer. He discovered his interest in technology after reading a tech magazine accidentally. Now he writes about everything tech from Windows to iOS and streaming services... Read more
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  • The green lines on Windows 10 laptop will usually appear due to outdated GPU drivers.
  • You can fix this issue by updating your drivers using specialized driver update software.
  • Check your laptop display for hardware failure as it is one of the common causes of this problem.
  • If you’re getting horizontal lines on a monitor in Windows 10, the solutions from this guide should be able to help you.
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The horizontal green line on your Windows 10 laptop can appear due to several reasons. While the hardware issue with your display is a possibility, at times, the green line issues are also triggered due to a corrupt display driver.

To effectively troubleshoot the problem, it is important to determine if the green line is occurring due to a software glitch or hardware failure.

In this article, we have listed a few troubleshooting steps to help you troubleshoot and fix the horizontal green line on Windows 10 laptop with ease.

How do I fix the green lines on Windows 10 laptop?

1. Update graphics card driver 

Outdated or corrupt graphics card drivers can cause display-related issues, including green lines on the top or bottom of the laptop screen. To fix the issue, update your display drivers to the latest version available.

While you can manually update graphics card drivers from the device manager, graphics driver updater software like DriverFix can make this safe and easier.

To make sure that everything goes smoothly and avoid any kind of GPU driver errors, be sure to use a complete driver update assistant that will solve your problems with just a couple of clicks, and we strongly recommend DriverFix. Follow these easy steps to safely update your drivers:

  1. Download and install DriverFix.
  2. Launch the software.
  3. Wait for DriverFix to detect all your faulty drivers.
  4. The application will now show you all the drivers that have issues, and you just need to select the ones you’d liked fixed.
  5. Wait for the app to download and install the newest drivers.
  6. Restart your PC for the changes to take effect.
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2. Update BIOS 

  1. Press the Windows key, and type cmd.
  2. Right-click on Command Prompt and choose Run as Administrator.
    Horizontal green line on Windows 10 laptop
  3. In the Command Prompt window, type the following command and hit enter:
    wmic bios get smbiosbiosversion
  4. The above command will display the BIOS or UEFI firmware installed on your PC.
  5. Once you have the BIOS version, open your Laptop OEM’s website.
  6. Visit the download center and then enter your laptop details.
  7. On the download page, check if you have a BIOS update available for your laptop.
  8. Download the BIOS and file and extract the Zip file.
  9. Open the readme.txt file and follow the instructions to update BIOS.

We have a detailed guide on how to update BIOS on Windows 10 that you can refer to for more information. After updating the BIOS, check if green lines on your Windows 10 laptop are gone.

3. Inspect for hardware issues 

Horizontal green line on Windows 10 laptop
  1. You can check if the horizontal green line of your laptop screen is due to hardware issues with your display or a software glitch by booting into your BIOS.
  2. To do this, shut down your PC.
  3. Next, press the power button to power on. Start pressing the F2/Del/F10/F12 key depending on your laptop manufacturer to access BIOS in Windows 10. Refer to your laptop’s user guide for more information on how to enter BIOS.
  4. Once in the BIOS, check if the horizontal green line is visible. If it is not visible, exit BIOS, restart your computer normally and proceed with the other steps below.

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A visible green horizontal line in the BIOS hints at a possible display hardware failure. Try replacing your LCD by contacting your laptop manufacturer.

Additionally, try connecting your laptop to a secondary display monitor. Check if the green horizontal line appears on your secondary monitor as well. If not, you may have to replace your laptop display to fix the problem.

4. Perform a display driver rollback 

  1. Press the Windows key + R to open Run.
  2. Type devmgmt.msc and click OK to open Device Manager.
  3. In Device Manager, expand the Display Adapters section.
  4. Right-click on your current display adapter.
  5. Choose Properties.
  6. Open the Driver tab in the Properties window.
  7. Click the Roll Back Driver button. Skip to the next step if the option is greyed out.
  8. Follow on-screen instructions to roll back the display driver.

After the rollback is complete, reboot your PC and check if the green lines on your Windows 10 laptop are gone.

5. Reinstall display driver 

  1. Open the Device Manager.
  2. In Device Manager, expand the Display Adapter section.
  3. Right-click on your current display adapter and choose Uninstall Device. 
  4. Check the box Delete the driver software for this device.
  5. Click Uninstall to confirm the action.
  6. Once uninstalled, reboot the computer. 

After the restart, Windows will automatically reinstall the required driver for your display adapter. Once that is done, check if the green lines appear on your Windows 10 laptop.

6. Install pending Windows updates

  1. Press the Windows key + I to open Settings.
  2. Go to Update & Security.
  3. Download and install all the pending updates.
  4. Once installed, restart your PC and check for any improvements.

The green lines on Windows 10 laptop usually occur due to outdated graphics card drivers. If the issue persists after updating the driver, check your laptop display for hardware failure.

Did our solutions work for you? If they did, let us know in the comments below.

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