A white horizontal line appeared at the bottom of my screen below the taskbar.

[Guest C Vana]

First off, I'm using Windows 10. A white horizontal line appeared at the bottom of my screen below the taskbar randomly while I was playing a game. The line raised the taskbar slightly, and shifted the resolution of the screen, there is a small space under the white line between the white line and the bottom end of my monitor. The small space below the white line still shows what the screen is showing in the background. I have tried a couple of answers from other almost similar problems but none seems to work.

 

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