Released June 2012 / Core i7 processor with Turbo Boost / Up to 1 GB DDR5 Video RAM

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How to recognise corrupted EFI chip?

Hi there,

I've got MacBook Pro 15" 2012 i7 - I find out someone tried to solder EFI chip and now I don't know if its just that chip still faulty or firmware corrupted or..... just Macbook is Dead :(


- it is charging as usual

- when pressed power button just fans spin for second

- "white light" on for a second

- display is black

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Chosen Solution

Take it back to the seller. Sounds like a stolen machine to me.

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Bart will be eternally grateful.
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