You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

kernel_task is using a large percentage of my Mac CPU

how can i fix that ?

I tried to do a complete reset of the system

I tried to reset SMC and reset nvram, and it didn't work

plz help .

MacBook Pro 13″, macOS 10.15

Posted on Oct 6, 2020 2:29 PM

Top-ranking reply

Level 10

147,294 points

Posted on Oct 6, 2020 7:30 PM

A runaway kernel_task can be due to a number of factors, such as:

a failed or disconnected temperature sensor
cooling system inefficiency (an inoperative exhaust fan on Macs so equipped, possibly clogged with dust, including the heat sink)
a worn out, missing, or non-Apple (user-installed) battery on portable Macs
similar hardware-specific causes including internal hardware additions or modifications, external USB and other connected devices, or the driver software required to use them.

View in context

Similar questions