When I start my laptop the display is completely white. Displays properly on an external monitor. I had everything apart and reattached the cables. When I push on the corner of the motherboard it displays fine. Can I assume the motherboard is bad?
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Seems like there is a bad circuit of sorts on the motherboard, most likely associated with the on board graphics. I'd say send it in if it is under warranty or if you have an extended repair plan of sorts.
I did replace the motherboard, but I have the same issue. Even replaced the CPU. It does not seem to be the video cable, when I wiggle it nothing happens.