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Released June 2012 / Core i7 processor with Turbo Boost / Up to 1 GB DDR5 Video RAM

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Serial No. went missing on my MacBook Pro

Hey guys!

Have you ever met this?

I have been recently suffering from nVidia issues on my mid2012 i7 15" MBP. It freezes all the time, have little squares, and lines on screen, when frozen. It wouldn't be a problem, because I have Apple Care, BUT!

As far as I am experiencing these issues, my motherboard forgot it's serial no. It's like if I had already changed my logic board, it says "System Serial#".

I am working with Macs, I am repairing them since 2010, but I've never seen anything like this, and this machine's logic board hasn't been changed, that's for sure, bcz it's my own.

I attach some pictures, where you can see, that hardware monitor app recognizes that I have "switched" computer, but remembers an older machine (with my serial no.), which is quite similar.....

https://www.dropbox.com/sh/0xrdv6o3f700q...

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Would you mind giving us full serial number off the bottom of the machine.

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Solution retenue

Did you check the systems firmware? Here's Apples TN on how to check and update: EFI & SMC firmware updates for Intel-based Macs

What happens when you boot the system off of an external HD or thumb drive which you know works correctly on a different like system? Does it still mess up?

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Will this solution work on a Mid 2013 MacBook Air 11”?

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Time marches on!

This solution was workable with the older OS-X OS's. I'm sure you are now using a much newer version of OS (MacOS) I would recommend you give us all of your systems details in a fresh question here: Ask a Question

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Andras sera éternellement reconnaissant.
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