Run the built-in self test -- hold the D key through powerup.
If the fault shows on the screen test, replace the upper half of the system (display panel, touch panel, bezel, frame, hinges and cables are all one assembly).
If the fault DOES NOT show on the self test, it's more likely a faulty GPU - replace the system board.
ejn63
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October 11th, 2017 05:00
Run the built-in self test -- hold the D key through powerup.
If the fault shows on the screen test, replace the upper half of the system (display panel, touch panel, bezel, frame, hinges and cables are all one assembly).
If the fault DOES NOT show on the self test, it's more likely a faulty GPU - replace the system board.