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.

loud fan hissing

What must be done to resolve loud hissing fan? (iMac (Retina 5K, 27-inch, 2020)

Posted on Apr 25, 2022 1:28 PM

Top-ranking reply

Level 10

143,452 points

Posted on Apr 25, 2022 2:12 PM

Please reset the SMC 2-3 times back to back with all wired peripherals physically disconnected.

How to do a SMC Reset.

View in context