Help, macbook air 2014 slow and fan running on high.

[MuggenZifter]

My macbook has its fan stuck on high and the processor pinned at 100% when running on battery. When i plug the charger in and it gets charged it slows down and works fine again. i tried smc reset and pram reset but it didn't do anything. what should i do?

 

[MuggenZifter]

i know. its not realy mine its my mom's 

[ahuckphin]

4 minutes ago, MuggenZifter said:

My macbook has its fan stuck on high and the processor pinned at 100% when running on battery. When i plug the charger in and it gets charged it slows down and works fine again. i tried smc reset and pram reset but it didn't do anything. what should i do?

 

you might want to change the fan reinstall the OS

or simply go to an apple store and ask for their advise 

[MuggenZifter]

Just now, bindydad123 said:

you might want to change the fan 

its not the fan thats broken. it uses 100% of the cpu so it has to cool.

[mathijs727]

1 hour ago, MuggenZifter said:

its not the fan thats broken. it uses 100% of the cpu so it has to cool.

Open activity monitor and check what app is using that CPU power.

If you click on the battery icon in the status bar it will also tell you which app use significant battery.

[MuggenZifter]

1 hour ago, mathijs727 said:

Open activity monitor and check what app is using that CPU power.

If you click on the battery icon in the status bar it will also tell you which app use significant battery.

It says kernel_task is using 400% CPU

[mathijs727]

1 hour ago, MuggenZifter said:

It says kernel_task is using 400% CPU

Ok, so now we know the problem.

The second step is how to fix it.

 

I personally have not had this problem on my Macbook air 2013 (original Haswell) but luckely we have Google:

https://www.google.nl/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=os%20x%20kernel_task%20high%20cpu%20usage

 

You could try these fixes and see if they work:

https://discussions.apple.com/thread/7253639?tstart=0

http://blog.viktorpetersson.com/post/136535061619/how-to-fix-kerneltask-cpu-usage-on-el-capitan

[MuggenZifter]

i cant find my version from step 3 in that folder

[MuggenZifter]

will completely resetting it also work?
 

[mathijs727]

13 hours ago, MuggenZifter said:

will completely resetting it also work?
 

I'd suggest to reinstall OS X if everything else fails.

Dont forget to make a backup using time machine so you dont loose important data.

 

Apple has a guide on its website on how to reinstall  OS X:

https://support.apple.com/en-us/HT204904

[MuggenZifter]

Went back to the apple store with it. They summed up a repair for me. 900 euros!!!!!!!!!!!!. Did i already mention i hate Apple?

[don_svetlio]

12 minutes ago, MuggenZifter said:

Went back to the apple store with it. They summed up a repair for me. 900 euros!!!!!!!!!!!!. Did i already mention i hate Apple?

Just Reinstall the OS yourself.

[MuggenZifter]

Just now, don_svetlio said:

Just Reinstall the OS yourself.

Hope i can figure it out. Im good with windows pc's and building pc's but when it comes to Mac's......