Whether they’re red, green, or blue, vertical lines on a computer screen aren’t a good sign. While it could mean your screen is getting old and needs to be replaced soon, it could also just be a bad HDMI or DisplayPort cable. It could also mean your graphics drivers need an update, or that you need to restart your monitor or PC.
How can I fix vertical lines on my laptop screen?
Whatever the cause, there is a chance that you can get your computer screen back to normal. Just try a few of these tips.
Vertical lines on a monitor are one of three biggest problems: the display itself is defective, the connection between your computer and the display is defective, or the display is receiving incorrect information.
There is not much you can do about the first problem unless your monitor is still under warranty. However, the other problems are relatively easy to fix and may fix the vertical lines on your computer screen.
