Macbook Pro chimes and then switches off at boot

This is a discussion on Macbook Pro chimes and then switches off at boot within the Apple Hardware forums, part of the Apple Forums category; Hi I have a Macbook Pro (MC374LL/A) which won't boot anymore I followed the recommended steps in the following links: Mac OS X: Gray screen ...

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  1. #1
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    Macbook Pro chimes and then switches off at boot

    Hi

    I have a Macbook Pro (MC374LL/A) which won't boot anymore

    I followed the recommended steps in the following links:

    Mac OS X: Gray screen appears during startup

    https://discussions.apple.com/thread/5391976

    ...but wasn't able to obtain any improvement

    1) Safe boot doesn't work

    2) Reset the NVRAM / PRAM doesn't work

    3) Start up your Mac while holding the C key doesn't work

    The DVD I manage to enter is immediately ejected

    On each boot the grey screen lasts barely two seconds before the MBP switches itself off

    Any ideas ?

    thanks
    yann

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  3. #2
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    I'm afraid that doesn't sound particularly healthy, and you have already tried all the steps I would suggest as far as self-help is concerned. I would be tempted to take it to your nearest Apple Store or reputable Reseller and get it diagnosed by an expert....probably not exactly what you wanted to hear, but in this case, I would suggest it is the most prudent option.
    'Deep Thought' - Mac Mini Late 2018- macOS Mojave (10.14.5)
    'Marvin' - Mac Mini Late 2014 - macOS Mojave (10.14.5)
    'Orac' - MacBook Pro 13" Mid 2012 - macOS Mojave (10.14.5)

    iPhone 6S - iOS 12.3.1
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