HP Compaq NC4400: NC4400 display "whites."

I have two of these laptops, both have this anomaly of the screen. I can hit hard enough then either have to restart or put to sleep, then he wakes again so he could view it. Sometimes I have two attached screens and the other screen is not affected, according to me it was a common fault but what I have to change? Is it the motherboard? the converter to display? or the screen itself?

Thank you

Martin.

All the characteristics of a bad cable. It may need to be replaced.

Tags: Notebooks

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