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2.3GHz, 2.6GHz, or 2.7GHz quad-core Intel Core i7 processor (Turbo Boost up to 3.7GHz) with 6MB shared L3 cache.

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Very loud fan after battery replacement in MacBook Pro (Retina, 2012)

I replaced the battery (see bow link) for my MacBook Pro (Retina, 2012). Everything is operating as normal except the fan loud and constant (even though it doesn't seem like the laptop is overheating), this never happened before the battery replacement. I reset the SMC but that didn't do anything. Any ideas?

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BATTERY REPLACEMENT

Update (01/17/2023)

I restarted the system and held the D key, this is the error message I got

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Let’s see if the onboard diagnostics give us a clue on what’s happening. Restart the system and press the D key to enter let us know what the error message is.

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I did this and got the following message, I've also attached a screenshot in original post:

Error: 0x8000000000000003, Cannot Load 'EFI/Drivers/TestSupport.efi'

Status: 0x00000003

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@dukesup1978 - Well I was hoping it would work !!😖!! Open your window and scream “thanks Apple for breaking it”

So… Plan B! You’ll need to get this app which will give us some detail TG-Pro you’ll need the full version to get the diags. Post a snapshot of the main screen make sure to capture all of the sensors.

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