I'm having Mac Air 13inch 2014 having 4 gb memory and 120 gb Hard disk , from the few days i have been facing a problem that kernel_task is taking 300% of my cpu and my mac is running very slow and also it doesn't starts up until i press the power button for 30 seconds .
Things i have tried :
- Fresh Installation of OS X Yosemite
- Reset The SMC
- Reset The PRAM
All in vain the kernel_task is still appearing and i also run the apple hardware test but it shows no Errors in Hardware .
What should i do?
Best Answer
This is Yosemite's way of cooling your machine.
https://support.apple.com/en-us/HT203184
The underlying issue may be another process, or even that the airflow is blocked, causing overheat.