Imac Noisy Fan

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Level 1

8 points

Imac Noisy Fan

Hi all,

I bought my new Imac in Dec 2021. Its an M1 chip. Used it heavily (word processing, not gaming) until April then it's largely had a rest til now (Sept 2022). Now I've gone back to use it again to do some revisions and the fan has been randomly coming on very noisily. I looked up what to do and it said restart. Fair enough, I don't do that a lot, but even after having restarted it is still coming on sometimes and being really noisy. I'm only reading PDF files and doing a bit of typing.

Any ideas?

Thanks

iMac 21.5″, macOS 10.14

Posted on Sep 11, 2022 8:50 PM

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Answer 1

Top-ranking reply

den.thed

Level 10

93,076 points

Sep 12, 2022 6:12 AM in response to ChrisJC63

Go to Applications > Utilities and open Activity Monitor

select the CPU tab and check to see if High CPU Load corresponds with the elevated fan speed

if not, select the Disk tab and check to see if Disk activity corresponds with the elevated fan speed

Activity Monitor User Guide for Mac - Apple Support

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Answer 2

Sep 11, 2022 9:08 PM in response to ChrisJC63

Hello friend, I hope you are doing very well, that can be a common issue, I recommend you do an SMC and NVRAM reset on your Mac, I attach the articles below:

Reset the SMC of your Mac - Apple Support

Reset NVRAM on your Mac - Apple Support (IN)

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Answer 3

ChrisJC63 Author

Level 1

8 points

Sep 11, 2022 9:32 PM in response to ChrisJC63

That’s for older Macs tho, not the 2021 model. The only thing recommended for it is a restart and I’ve done that

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Answer 4

ChrisJC63 Author

Level 1

8 points

Sep 12, 2022 8:11 PM in response to den.thed

So its just happened. 64% of the CPU was idle but when I looked at the disk it had 200 write outs per second. I have no idea what that is or what it means. But it was the only number that was big

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Imac Noisy Fan

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