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I started up my PC this morning and there was no display.. so I turned it off, checked the cables and restarted it. When I turned on my monitor it was in this "burn-in mode", constantly switching primary colors ( red, green, blue). I've already tried several troubleshooting options like holding the menu button and the up button simultaneously but I've had no luck whatsoever, it's still in burn-in mode.

My monitor brand is ViewSonic and the model is : VA721

Does anyone have a clue on how to leave this burn-in mode?

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What do you mean you checked the cable? Are you sure the cables are working and that a video signal is comping from the PC? –  Dave May 9 '14 at 12:28

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