How Do I Fix Vertical Lines on My Computer Screen?

The exact cause of the lines will only be apparent if and when you fix it.

Disconnect your monitor’s video cable (for example, itsHDMI cable) and plug it back again.

Illustration of vertical lines on a computer screen

Keith Kasaija / Unsplash

you’ve got the option to also power cycle the monitor by turning it off and on again.

Disconnect the video cable butdon’treattach it.

Sometimes, this is all you should probably do to fix vertical lines on a computer screen.

Try a different cable.

This can be a new one or one that’s known to work in a different system.

Take this time to also plug the cable into a different port on the monitor and/or computer.

Try the monitor on a different PC.

If the lines are still present, the monitor or the cables are to blame and need replacing.

patch your graphics drivers.

If your drivers are outdated, there may be a compatibility issue causing the vertical lines.

Reset BIOSto its factory defaults to see if an overclock or power setting is causing issues with the display.

RAM issues can cause problems with vertical lines on a monitor.

To do this, firsttest the RAM.

Whether it passes the tests or not,reseat the memory modulesbefore considering replacing the RAM.

Replace the graphics card.

Graphics cards can be costly.

Consider whether it’s worth replacing your GPU or your monitor, depending on which is more affordable.

FAQ

Horizontal lines may indicate overheating, physical damage, or a screen resolution issue.

To fix the issue, check the monitor connection and resolution, and remove any magnets nearby.

Also, ensure you’re using the correct source input for your display.

Another option: Use an all-white screensaver and let it run on your display for several hours.

you’re free to also try a software tool that fixes stuck pixels, such as JScreenFix.