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I have a MacBook Pro mid 2009 that crashes during startup after the chime and once in a blue moon gets as far as the login screen before crashing.

Crashes during safe reboot or recovery reboot too

Hardware test from original cd works but finds nothing wrong Smc reset changes nothing

I have another 2009 MacBook Pro and on interchanging them the following parts work fine

Hard drive Logic board MagSafe port Heatsink Fan Sata cable Battery Ram

Any ideas for tests or parts to check that might be able to crash the whole computer during startup would be appreciated!

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  • Try booting in verbose mode (Cmd-V) and see what is causing errors, if any. Also, try running Apple Hardware Test (AHT). Hold the D key while booting from a powered off state with the AC adapter connected. Run the extended tests. Post your results to the original question.
    – Allan
    Jul 18, 2016 at 14:29

1 Answer 1

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Try an Apple Hardware Test by holding down the D key: https://support.apple.com/en-us/HT201257

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  • This is not an answer and should be posted as a comment.
    – Allan
    Jul 18, 2016 at 14:28

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