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Model A1311 / Mid 2010 / 3.06 & 3.2 GHz Core i3 or 3.6 GHz Core i5 Processor

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Why does my iMac shut down halfway through startup

My Mac shuts down halfway through startup when the progress bar is at halfway.

Answer this question I have this problem too

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1 Answer

it could possibly be a faulty sector in the HDD or wrong power supply. do you know if its the original power cord and a tested working power source?

not sure if any of this would work.

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sonosette will be eternally grateful.
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