Vertical Red Lines on Screen: Causes & How to Fix

Faulty software or an outdated driver could be the cause

by Srishti Sisodia
Srishti Sisodia
Srishti Sisodia
Srishti Sisodia is an electronics engineer and writer with a passion for technology. She has extensive experience exploring the latest technological advancements and sharing her insights through informative... read more
Reviewed by Alex Serban
Alex Serban
Alex Serban
Windows Server & Networking Expert
After moving away from the corporate work-style, Alex has found rewards in a lifestyle of constant analysis, team coordination and pestering his colleagues. Holding an MCSA Windows Server... read more
Affiliate Disclosure
  • The issue could have occurred due to outdated graphics drivers, misconfigured BIOS settings, or damaged HDMI or display port cables.
  • This guide will cover all the possible fixes available to fix the issue in no time.
vertical red lines on screen
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Vertical red lines on a computer screen could be frustrating and indicate underlying hardware or software issues.

In this guide, we will discuss all the available solutions to fix the problem right after talking about the causes. Let’s start! 

What causes the vertical red lines on the screen?

Vertical red lines on your computer could appear due to various reasons; some of the common ones are: 

  • OverheatingOverheating issues on graphics cards can cause various problems, including this one. To avoid overheating, ensure your computer vents are clean and fans are working correctly. 
  • Hardware problems – If the graphics card, monitor, or cable is faulty, you might face this issue. Check for the faulty product’s warranty and get it repaired or replaced. 
  • Corrupted drivers – If the display drivers on your computer are old or outdated, you may see red lines on your computer. You need to update drivers to fix the issue.
  • Electrical interference – If your computer is placed near another electronic device, there could be electrical interference. To fix it, move the monitor to a different location to see if it fixes the issue.
  • Physical damage – If your computer monitor has suffered physical damage, red lines can appear on the screen. 

What can I do to fix the vertical red lines on the screen?

Before engaging in advanced troubleshooting steps, you should consider performing the following checks:

  • Remove the peripheral.
  • Reconnect the video cable.
  • Replace the ribbon cable.
  • Restart your computer.
  • Try using a different monitor.

1. Check the HDMI or display cables

 vertical lines on the screen HDMI

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Check your HDMI or Display port for damage. If you think it is damaged, unplug the monitor cable and plug it into a different monitor or graphics card port.

Now check if you see the red vertical line on the screen. If the port has no signs of damage, try replacing the Display Port cable or power cable to fix the issue.

2. Update the graphics driver

  1. Press the Windows + R to open the Run window. APPWIZ RUN COMMAND
  2. Type devmgmt.msc and press Enter to open Device Manager
  3. Go to Display adapters and select the graphics driver. Graphics Driver update vertical red lines on screen
  4. Now right-click the graphics driver and click Update driver
  5. On the next screen, Search automatically for driversUpdate driver 2
  6. Follow the onscreen instructions to complete the process. 
  7. Once done, restart your computer.

In addition, you can follow up and choose another method for updating any PC drivers fully automatically and without any risks of incompatibility or system errors.

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:

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  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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3. Adjust the screen resolution

  1. Press Windows + I to open Settings.
  2. Go to System and click Display.System display vertical red lines on screen
  3. Under Scale & Layout, go to Display resolution and choose the solution recommended for your display. Display resolution
  4. Go to Scale, and choose the recommended settings from the drop-down.Scale
  5. Restart your computer to save the changes. 

4. Reset the BIOS

  1. Press Windows + I to open Settings
  2. Go to System, then click RecoverySystem - Recovery Windows 11
  3. Next to Advanced startup, locate and click Restart nowAdvanced Startup vertical red lines on screen
  4. On the Choose an option screen, click TroubleshootChoose an option - Troubleshoot
  5. On the Troubleshoot page, select Advanced optionsAdvanced options
  6. Next, click UEFI Firmware SettingsUEFI 2
  7. Click RestartUEFI Restart
  8. On the next screen, choose the suitable option to enter BIOS. 
  9. Locate Reset to default or Load to default and click it.Bios_Devices
  10. Click Save & Exit to save the changes. Once the process is complete, your computer will restart normally. 

5. Reinstall the driver

  1. Press the Windows + R to open the Run console. 
  2. Type devmgmt.msc and press Enter to open Device Manager
  3.  Go to Display adapters and double-click to expand it. 
  4. Now right-click the graphics driver and click Uninstall driverUninstall device
  5. Go to Action and click Scan for hardware changes. This will install the driver again.Action vertical red lines on screen
  6. Restart the computer and check if the issue persists.

So, these are the methods you must follow to fix the vertical red lines on the screen issue. If nothing has worked for you, check for hardware damage or get the device serviced by a professional. 

Please let us know in the comments section below if you have any questions or concerns. 

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