What is black line on computer screen and how to fix it?

[Janviii]

A black line keeps popping on my computer screen. What could be the reason behind it and how to fix it?

 

[meena]

A black line on a computer screen is usually caused by a hardware issue like a damaged display panel, faulty graphics card, or loose cable connection. To fix it, restart your computer, update your graphics drivers, or connect to an external monitor to test. If the line persists, screen repair or replacement may be needed.

 

[SK_tech]

A black line on your screen usually means either a screen issue or a graphics problem.

Quick things to try:

• Restart your computer (simple but sometimes works).
• Update your graphics driver.
• Connect to an external monitor — if the line shows up there too, it’s a graphics issue. If not, your screen might be damaged.
• If it’s a laptop, press gently around the screen edges — sometimes a loose connection causes it.

If it’s a hardware thing, you might need a screen replacement.