Home » Forum
Why are vertical lines suddenly appearing on my PC screen?
Quote from charlesjone on April 20, 2026, 12:48 pmIf you start seeing pc screen lines, it could be caused by several things. The most frequently occurring causes are a loose display cable, old graphics drivers, or a faulty graphics card. It can also occur sometimes when the monitor panel has a problem. Attempt to restart your computer, reconnect HDMI /Displayport cable and update graphics drivers. In case the lines are even in the BIOS or when starting up, the issue is probably a hardware problem and not a software one.
If you start seeing pc screen lines, it could be caused by several things. The most frequently occurring causes are a loose display cable, old graphics drivers, or a faulty graphics card. It can also occur sometimes when the monitor panel has a problem. Attempt to restart your computer, reconnect HDMI /Displayport cable and update graphics drivers. In case the lines are even in the BIOS or when starting up, the issue is probably a hardware problem and not a software one.