Vertical lines appearing on the computer monitor lead to difficulty reading text, distortion and flickering in images, and interruptions in work. Vertical lines on the monitor are caused by the loose cables, out-of-date graphics driver, wrong display settings or damage to hardware. Once the cause is determined, it is possible to find a solution without having to replace the monitor.
Quick Answer:
Restart your computer and monitor.
Check the video cable.
Update or reinstall the graphics driver.
Try another computer.
Call the repair service if the lines do not disappear.
Why Do Vertical Stripes Appear on a Monitor?
Vertical stripes on the computer screen occur due to a hardware or software issue, which can be determined by the colour and the pattern of the lines.
Loose or Damaged Video Cables
A loose HDMI, DisplayPort, or VGA cable interrupts the video signal, creating vertical lines on the monitor. Damaged cables are responsible for flickering and colored vertical lines.
Graphics Driver Problems
Old graphic drivers can cause malfunctioning of the display. If the lines emerged after the driver update or the system change, the graphics driver could be responsible for that.
Damage to the Monitor Panel
Physical pressure, accidental drops, or internal panel faults can cause permanent lines. A persistent black vertical line on a monitor may indicate panel damage, although cable and graphics issues should also be ruled out.
How to Get Rid of Vertical Lines on a Monitor
Follow the steps below, starting from the simplest.
Restart Your Computer and Monitor
Shut down your computer and monitor. Remove the monitor's power supply for approximately 30 seconds, reconnect it, and switch them on. By rebooting your machines, you can fix some temporary display errors.
Check the Display Cable
Remove the video cable from the two devices, then reconnect it. Look at the cable to see if there are any signs of damage, and try using another cable if possible.
If the vertical stripes disappear after changing the cable, then the original connection was faulty.
Update Your Video Card Driver
If you are a Windows computer user, right-click on the Start button and go to Device Manager. Expand Display adapters, right-click on the video device, and click on Update driver. Follow the instructions.
In case the issue occurs after an update of the video card driver, rolling back might be required.
Check Resolution and Refresh Rate
Open Settings > System > Display > Advanced display and set the required resolution. Make sure the settings correspond to the recommended ones.
Test the Monitor With Another Device
Use another computer or a laptop to connect to the monitor. Alternatively, use the monitor with another computer.
If the lines appear on both monitors, you may have an issue with the monitor itself or its internal units. If the lines appear only on one monitor, investigate the graphics hardware, drivers, and connections of that computer.
When to Seek Help from the Experts?
If the issue on your computer screen persists after checking the wires, drivers, and screen settings, it could be connected to the monitor unit, its internal connections, and the graphics unit.
Do not press the screen and avoid opening the device yourself, as this may worsen the issue. Lines on the screen that remain after the impact need a checkup by professionals.
DeviceFixes offers you help with repairing computers and laptops if they experience problems with the display units. If you cannot solve the problem by yourself, you may not bother about the repair of particular parts.
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