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Macbook only work when hot.

Tags:
  • microckrack
  • Intel i7
  • Windows
  • Mac OS X
  • freezes
  • Laptops
  • Motherboards
  • Macbook
Last response: in Mac Os X
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July 16, 2013 4:24:46 AM

Hi everyone, sorry for my english i'm not a native speaker.
I have a problem with my MacBook Pro "Core i7" 2.2 15" Late 2011 (MD318LL)
Specs:
- Intel I7-2675QM 2.2GHz
- 4Gb 1333 DDR3
- Radeon HD 6750M and Intel HD Graphics 3000
- 500 GB (5400 RPM)

The problem is, when laptop loading OS (Mac OS, Windows, doesn't matter), or in OS and it's cold, it freezes (onle hard reset helps). So if temperature is over 50C everything is ok, but if it goes under 50C laptop can freeze (not always). I can do anything as long as temperature is over thar limit.

Strange thing that everything fine in startup manager, or while installing mac os x, or while downloading mac os x (cmd+r in start up manager) and laptop is cold, i can do anything i want and it won't freeze.

I ran Apple Service Diagnostic and nothing wrong (except for hdd test: error -33000 [wrong drive type] but i think it's becouse of ssd (i changed hdd to ssd to test if hdd is ok)). Also i changed memory, same.

Maybe someone know whats wrong? I think the problem in microcrack on motherboard, but why everything ok in in startup manager and while installing OS.

Again sorry for my english, ask if you didn't understand anything, i'll try to explain.
Wait for you answers.

More about : macbook work hot

July 19, 2013 9:54:19 AM

No ideas? I just noticed that when loading in Mac OS with ctrl+v, macbook freezes at string device in slot slot--1. So this must be connected with graphic chip?
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