Macbook Pro 2012 freezing after moving it

Question

Level 1

26 points

Macbook Pro 2012 freezing after moving it

Hello guys.

I have a Macbook Pro from 2012 and I formatted it the other day for the first time. Since then (I don't know if it is related or not), sometimes, when I move the laptop (I put it on a table for example), the OS freezes and the pc reboots. Usually the screen just freezes and I can't do anything (move mouse, use keyboard, etc). A couple of times the screen just went crazy, horizontal weird lines and then the pc rebooted.

Any ideas that might help solve this issue?

Thanks in advance.

MacBook Pro, OS X El Capitan (10.11.6)

Posted on Sep 17, 2016 11:42 AM

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Answer 1

notcloudy

Level 4

1,258 points

Sep 17, 2016 12:02 PM in response to antucg

What do you mean by formatted?

If you just upgraded to El-Capitan from Maverick you will see performance issues if you don't have enough Ram to run El-Capitan.

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Answer 2

antucg Author

Level 1

26 points

Sep 17, 2016 12:23 PM in response to notcloudy

By formatted I mean: I reinstalled the OS.

I have 16gb of ram. It was already running El Capitan before this.

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Answer 3

Sep 17, 2016 12:33 PM in response to antucg

Anything you can reproduce the guys at the genius bar can fix.

Your appointment for an evaluation is free, in warranty or out.

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Answer 4

antucg Author

Level 1

26 points

Sep 18, 2016 11:11 AM in response to Grant Bennet-Alder

It turns out that it was because one of the memories was defective. Thanks for the replies!

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Answer 5

Sep 18, 2016 11:36 AM in response to antucg

Future Readers who get here by searching want to know:

What steps did you take to determine that?

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Answer 6

antucg Author

Level 1

26 points

Sep 18, 2016 11:41 AM in response to Grant Bennet-Alder

True I didn't think about it.

Basically the problem happened only when I moved the laptop (for example, I put it on the table). One of the times I just pressed the area below the laptop (slightly not too much), and it froze. I could reproduce it every now and then. I removed the lid and I could see that in the area where I was pressing there was only the memory. I turned the computer on, and once the OS had started, I touched the memory (again slightly), and it happened (I tried only with the one in the above slot). I tried removing one of the memories and it was ok. I put the one I removed first and the first time the OS didn't started up. I got the 3 beeps every 5 second (in theory problems with the memory). So what I have done is remove the one that is "damaged" and for now everything is ok.

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