iMac late 2013 OSX El Capitan - Fans Blazing at startup

Hello Apple community,

I've just updated to OS X El Capitan 10.11.2 version and now my 21.5-inch iMac late 2013 (16 GB of RAM, 3.1 GHz Intel Core i7) is blasting his fans constantly as long as it is turned. This behavior began as soon as the machine has restarted in update mode, update of OS X El Capitan. Now, whenever the machine is operated - same start-up and before logon! -, fans of the machine are on stronger that I've ever heard, and they stay at this level constantly.

Activity Monitor indicates that only 7.89% CPU is used by the system to the Max and 3.0% user, but usually sat at > 95% of processor inactivity levels. 6.87 GB of the 16 GB of RAM is being used (Google Chrome) but close all applications does not change the behavior of fan. Impact of energy remains at a level of reference, unless I open an application - then it spikes briefly before returning to almost zero. Disk seems very active. 4.16 GB read and 1000 MB > writing whenever I load the tab Network tab. seems active, but by far the majority of the data being sent is chrome, which - again-, when stop is not the problem.

I tried resetting the SMC and the PRAM, but no effect.

The fans turn on and go up to full power as soon as I press the power button and stay on until the computer has completely shut down. In addition, while resetting the PRAM, the fans went when I turned on the power first, then remained on all by pressing the P, R, option and command keys while the computer has been restarted.

I never heard my computer even use before fans, save for two instances when I was exporting a lot of audio in Cubase. Now they are on to what I assume is their top speed and they never again down a moment until the computer turns off.

Basically, as long as the machine has the power, it uses the fans at top speed.

I guess that's not very good for my machine.

Can you help me with this problem?

Thank you

Shrooblord

I also ran an Apple Hardware Test, and he returned with the PFM001 code that denotes a problem with the MSC. He advised me to go to an Apple store for repair. My iMac is still valid for the AppleCare warranty, so I guess I could do it.

But before I have return my computer, I want to know if you happen to have advice about issues related to the software maybe?

The problem started when I installed OS X El Capitan 10.11.2 - was not fans notice before that time. Would the update * really * screwed up my material of the moment where he started the installation? This seems unlikely.

Tags: Mac

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