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fan runs at high speed

After startup, fan runs at high speed, even when all applications are closed.

iMac, Mac OS X (10.7.4), iPhoto 8.1.2 (09)

Posted on Sep 2, 2015 11:12 PM

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2 replies

Level 6

8,588 points

Sep 2, 2015 11:15 PM in response to Waimanalo Blue

Hi! Resetting the SMC should help:

Resetting the System Management Controller (SMC) on your Mac - Apple Support

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Level 10

361,741 points

Sep 2, 2015 11:15 PM in response to Waimanalo Blue

Runaway applications can shorten battery runtime, affect performance, and increase heat and fan acti…

Intel-based Macs: Resetting the System Management Controller (SMC)

Resetting your Mac's PRAM and NVRAM

Could have a defective sensor.

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fan runs at high speed

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