Laptop Monitor - Permanent Vertical Green Line


The monitor on my dell latitude d505 is currently displaying a vertical green line from the top to the bottom of the screen, about 1/3 of a screen width from the right hand side. This line fades in during the dell splash screen and persists whether i boot into linux or windows. I'm assuming this is a hardware problem, but does anyone have any definitive advice on what may cause this?

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