How do I Fix a Black line appearing on my Computer Screen?

[Alex]

I’m getting a thin black vertical line on my display, and it doesn’t go away even after restarting. I’m not sure if it’s a software glitch or a hardware problem. Can someone guide me on how to troubleshoot this?

 

[Dustinhenderson]

A black line on your computer screen is usually caused by a loose cable, dead pixels, or a faulty display panel. To fix it, try restarting your computer, checking or reconnecting the display cable, updating your graphics drivers, or testing the monitor with another device. If the line stays, the screen may be damaged and might need professional repair or replacement.