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Mensagem original de: MakeItSimple ,

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My early 2011,  15” A1286 has the black screen and no chime. Someone suggested rubbing across the keys while power button is pressed - this occasionally got the fans running fast - no chime or display still.

Previously, I removed the logic board and cleaned the heat sink surfaces on the GPU and CPU etc.

I heated the GPU in case this made any difference. New Arctic Silver paste, reassembled, no difference.

Watching this forum for answers…

For what it’s worth: my other workhorse MacBook Pro, late 2011, 15” suddenly got the grey screen halfway thru booting - I found a guy on Youtube who showed how to bypass the faulty GPU, holding CMD/S then power button, then a whole bunch of terminal-type commands. I still use this machine happily, without much loss of resolution.

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