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

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Fan is still overheating

My laptop been overheating and the fans were making loud noises so i bought new fans and replaced it. But it still overheats and makes noise. What am i doing wrong? is there anything to fix it?

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Question could use more detail on the kind of noise. Are the fans just spinning at full speed all the time, or is it something else?


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I've had this problem on some of the machines with liquid heat sinks. I found it when I went to change the thermal paste. There was a slightly oily residue on the logic board and I figured out the heat sink had leaked and was not doing the job anymore. Replaced them and the paste, cleaned the fan vents. All is right with the world: MacBook Pro 15" Unibody Mid 2012 Heat Sink Replacement

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Have you checked for dust? Dust buildup outside the fans can also block airflow. I just replaced my fans because they were constantly spinning at top speed and not cooling, and while the fans themselves were dusty, I found far more dust in a thick layer just behind the fans.

It's also possible there's something else blocking the airflow. The less obstruction to the airflow, the more efficient the cooling, and the less your fans have to spin.

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