Alienware 18 (2013) Flickering Screen (Green and Red pixels)

Hello guys,

yesterday my Alienware 18 lcd panel began with a problem The screen is flickering with red and green pixels, over the screen, including BIOS, Loading Windows, etc.

I've connected an external monitor and Its works fine on it. l 'd already changed the GPU initialization (Discrete and Integrated) through FN+F5 with no effects.

On Alienware Diagnostic Tools, it says that my LCD Panel, is Ok, but its not.

With an external monitor, I can work very well, without problem.

Can you help me?