
Method 3: Update Your Graphics Card Driver You could replace the ribbon cable with a new one of the same connection type to check whether the horizontal or vertical lines still exist on your computer screen. If your ribbon cable is defective, the horizontal or vertical lines will show on the computer screen in Windows 10. You can try to reconnect the video cable to the screen and then check whether the horizontal or vertical lines are gone. If you notice horizontal or vertical lines on the computer screen in Windows 10, it may be caused by the incorrect video cable connection.

There are six recommended methods to fix horizontal or vertical lines on the computer screen in Windows 10, applied to any screen like Dell, Samsung, HP, Lenovo, LG, Acer, etc.
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How to Fix Horizontal or Vertical Lines on PC/Laptop Screen Display in Windows 10 If you see no horizontal or vertical lines on your computer display in Windows 10, it tells that it is related to the hardware. Since BIOS is not a part of the Windows 10 operating system, if you still see horizontal or vertical lines on the computer screen, it indicates that it is software-related. You could enter the BIOS settings to determine whether it is a software-related or hardware-related problem. The horizontal or vertical lines on the computer screen may be caused by various issues, ranging from outdated graphics card drivers, incorrect video cable connections to defective ribbon cables. Why Horizontal or Vertical Lines on Computer Screen Display in Windows 10 To solve the horizontal or vertical lines across your desktop or laptop screen issue, you may need to find out what cause the problem.

There are a lot of reasons why there are horizontal or vertical lines on the computer screen display in Windows 10. 6 Ways to Fix Horizontal or Vertical Lines on Computer Screen Display in Windows 10
