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Model A1286. Released February 2011 / 2.0, 2.2, or 2.3 GHz Quad-core Intel Core i7 Processor

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Weird grinding noise + Startup chime but nothing shows up on screen

Hi!

My Macbook sounds like it’s starting up as usual (there’s a weird grinding noise but that might be the disk drive…), but then nothing pops up on the screen. I’ve tried a whole bunch of things like resetting the SMC/PRAM, and that didn’t help.

There may have been some liquid damage to the thing… could it just be extremely dirty?

The bottom is also missing a lot of screws, could it be related to that?

Oh also, the charger is a green color instead of an orange color, which I've read might be a battery issue. Could this be preventing it from showing anything?

Thanks in advance!

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I think you’ll need to open the system up to inspect things. The grinding is likely dirt in the fans. Using a small soft paint brush scrub the surfaces to loosen the dust and junk then us a can of can’ed air to carefully blow the dust away using short bursts.

Once you’ve cleaned tings do you see any staining or white or green crust?

Follow this IFIXIT guide: MacBook Pro 15" Unibody Early 2011 Logic Board Replacement Follow the steps to Step7 for now.

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This may fix the grinding noise you heard. https://www.youtube.com/watch?v=eZkVrlzz...

I have no idea whats happening with the startup.

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Sydney Cushman will be eternally grateful.
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