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Fix Fan Noise & Overheating After Upgrading Mac OS with an SMC Reset

This guide is about the Fix Fan Noise & Overheating After Upgrading Mac OS X with an SMC Reset. I will try my best so that you understand this guide very well. I hope you all like this guide Fix Fan Noise & Overheating After Upgrading Mac OS X with an SMC Reset.

A reasonable number of users report that upgrading to Mac OS X has caused their Macs to heat up in general and their fans to keep activating, causing excessive and unusual fan noise. For users who have just completed an upgrade from 10.6, 10.7, or 10.8, this is usually due to a combination of Spotlight and mdworker & mds process that smooths itself in about an hour.

If waiting for it has not resolved the heat and fan noise or Spotlight processes are not running, you may want to try resetting the system controller or SMC. This seems to be especially effective for the MacBook Pro and MacBook Airs, which are hot and have significant fan noise after installing OS X.

Reset the SMC to correct fan noise and heat in OS X.

MacBook, MacBook Pro, and MacBook Air models with built-in batteries:

  • Shut down your Mac
  • Connect the MagSafe adapter
  • Hold down Shift + Control + Option + Power at the same time
  • Release all keys and buttons at the same time
  • Press the power button to turn on your Mac normally

Apple points out that the small LED on the MagSafe adapter can change colors or states, or even turn off for a moment when you reset the SMC, which can be an easy way to tell if it’s done successfully.

This tip was left in our comments recently, and several readers have responded or emailed us with positive results. To further support the solution, Apple’s support document lists the following reasons to restore SMC first: “The computer’s fans run at high speed, even when the computer is not very busy and is properly ventilated.

Resetting the SMC is a fairly common trick to fix some of the more bizarre power and battery issues on a Mac, and in many cases it works. If all else fails, try this, it may just solve the heat and fan noise problems after updating OS X.

entry: Whenever the SMC is reset, you usually lose the custom power settings, so be prepared to return to System Preferences to readjust the power saving settings.

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FAQ: Fix Fan Noise & Overheating After Upgrading Mac OS X with an SMC Reset

In this guide, I told you about the Fix Fan Noise & Overheating After Upgrading Mac OS X with an SMC Reset.

In this guide, I discuss about the Fix Fan Noise & Overheating After Upgrading Mac OS X with an SMC Reset, which is very helpful.

Apple Devices only.

mac OS or iOS

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James Hogan
James Hogan is a senior staff writer at Bollyinside, where he has been covering various topics, including laptops, gaming gear, keyboards, storage, and more. During that period, they evaluated hundreds of laptops and thousands of accessories and built a collection of entirely too many mechanical keyboards for their own use.

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