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RE: dell inspiron n5050 display problem. shaky screen

Run the built-in self test on the LCD -- hold D through powerup.  If you see the same fault, it's likely a bad screen. If not, it's either a bad video cable or a bad GPU -- replace the cable first.  If that doesn't solve it, the GPU is bad -  which means a replacement mainboard (or on a system of this one's age, a new system).

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