2012 MBP Kernel Panic - Cant find cause


Brian Townsend

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Hey folks! One of my clients has a 2012 Macbook Pro, not sure of the OS. It is having a Kernel Panic on boot every time. Tried new RAM, new HDD with clean install, it is continuing to happen. If I post a photo will that help?





Thanks in advance for the help!

Brian
 
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Cory Cooper

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Hello and welcome.

Kernel panics can be caused by numerous hardware/software issues. Spawn_Dooley's question was an excellent one, but if nothing is connected, then the issue is with the hardware or software itself.

From the log, it looks more like a hardware issue - relating to the CPU/logic board.

-Have you tried an SMC and/or NVRAM/PRAM reset?
-Do you have an external drive with OS X installed that you can startup from?
-Do you hear the startup chime at all?
-Does the Mac have any physical/liquid damage that you know of?

C
 

Brian Townsend

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Hey Cory,

- Yes tried both
- Yes but it does the same thing on a new HDD with a New OS or from a bootable USB or from anything else I boot to.
- I don't recall hearing it.
- Not that I know of, nor that the client knows of. Took the board it and it looks good, some slight discoloration (rusty looking) on some of the areas that I would think are unrelated. Getting it cleaned as we speak.

The client did mention that neither of her USBs work, which would make sense considering the error message mentions USBs.
 
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Brian Townsend

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Ok! Fixed it! There was a burnt up chip somewhere underneath or near the USBs. We put this thing under a microscope and examined it to find it. Replaced that chip and the non-functional power rail (# 5 I believe) and the thing is working great now. Thanks to those of you who tried to help.
 

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