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Reboot into recovery mode (Command + R on boot prior to startup chime), select Utilities/Terminal,
csrutil disable
<Enter> (repeat process, usecsrutil enable
after removing the file), reboot. -
Go to About this mac under the apple in the upper left and click on More info
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Click on system report
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make a note of what it says after Model Identifier (MacBookPro8,2 is mine).
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From the Root drive (not home folder): – System Library – Extensions – IOPlatformPluginFamily.kext (alt-click/View Contents) – Plugins – ACPI_SMC_PlatformPlugin.kext – View Contents – Resources -– find the name from step 3 and move it to a folder that you can find again if needed.
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Restart and you’re done (other than enabling SIP).