Apple’s Worldwide Developers Conference to kick off June 10 at 10 a.m. PDT with Keynote address

The Keynote will be available to stream on apple.com, the Apple Developer app, the Apple TV app, and the Apple YouTube channel. On-demand playback will be available after the conclusion of the stream.

iMac fan constantly runs at full blast

I recently got a 21.5" Mid 2010 iMac from eBay, and in the listing it stated that one of the fans constantly runs at full blast. When I use the iMac, the fan starts at 100% as soon as the chime plays and it stays at 100%. I tried resetting SMC and any other generic fixes that I could find on google. Is there anything else I should try or should I just live with it?

iMac 21.5″, macOS 10.13

Posted on Jun 30, 2023 2:24 AM

Reply
Question marked as Best reply

Posted on Jun 30, 2023 5:44 AM

Run Apple Hardware Test (now known as Apple Diagnostics, but the key chord is the same): Use Apple Diagnostics to test your Mac - Apple Support

1 reply

iMac fan constantly runs at full blast

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple ID.