Solve : Green vertical lines on my Monitor?

1.	Solve : Green vertical lines on my Monitor?
Answer» I was playing Super Mario 3D WORLD using CEMU emulator, everything was alright until I switched it off and again boot it. There was a SLEEK vertical line that appeared near the middle of the screen. Gave it a GENTLE press on the Dell monitor(the line) and then suddenly it vanished. I kept on pressing a few times but the green line was gone for good. Thing is Should I replace it? or was it a general glitch that I should OVERLOOK?

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