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Sorry about the outcome. Any signs of corrosion/rusting inside the machine points to liquid unfortunately. For safety reasons technicians cannot "show" you the liquid damage other than taking a photo.

He actually did. I asked home to take of the bottom shell and show me, he then took it out the back removed the bottom and then came out and showed me for real.

Oh and the photo I uploaded is my own.
 
I've attached a photo of the corroded screw. I still find it strange considering there were no signs of liquid residue or anything but anyway.

There is some darkening of the compliant material on either side of what appears to be a case-assembly screw hole on the lip of the aluminum case, just below and to the right of the corroded screw in the photo you posted.

I expect this darkening marks the entry point for the liquid. If the liquid were clear water or something of the sort, it would leave little or no other residue. But that darkening (which might even be mildew) is damning.

Humidity cannot be blamed or other screws and components would be similarly corroded. The damage is very localized and coincides with that suspicious darkening.

To my eye this is a slam-dunk case of accidental damage. It is possible you inadvertently put the machine down in a small bead or puddle of water on a table somewhere, and the liquid wicked in and slowly did its damage. That might be why you have no idea how or when it could have happened.

In other words, I'm happy to propose that OP is not lying, but that the damage is accidental nonetheless.
 
Ahh got you. Well no I can assure you that's not the case. All I know is that my computer was working perfect one day then wouldnt start the next.

If there is corrosion on the logic board like Apple says, then it must have been from so long ago that I can't remember, which if that was the case I doubt that it would be the cause of the issue, but I know that at argument would be completely irrelevant for Apple. Any way I'm picking the notebook up in a few hours so I'll let you know what I find.

only chance now is to find a local shop and see if they'll repair if for less than $900... what do you have to lose other than selling it on eBay and possibly making 600-900 for it.

here is a service that repairs logic boards for $259 http://www.ebay.com/itm/MacBook-Pro...739?pt=LH_DefaultDomain_0&hash=item4ad03db86b worth a shot if you're in the US.
 
Sorry about the outcome. Any signs of corrosion/rusting inside the machine points to liquid unfortunately. For safety reasons technicians cannot "show" you the liquid damage other than taking a photo.

And to the poster who suggested the Genius team spilled liquid on the machine: liquids are not allowed inside the room where the techs work on the machines.

Nor would a screw corrode that quickly if the Geniuses did it. It had to have been wet for quite awhile.
 
Dead rMBP - Apple won't help

Just like to point out I wasnt talking about a Genius! I meant someone at home or college ...so you can all stop giving reasons why it wasn't a Genius now. ;)
 
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