How do I slow down the cooling fan. I've been having a problem with iMac shutting down. Now it runs full blast all the time its on
iMac 27″, macOS 10.15
You likely have a hardware issue, please take the computer in to have it serviced. I suspect that a fan sensor has failed. You can take it to an independent Apple Authorized Service Provider and they will diagnose it and fix it on your approval. To locate an Apple Authorized Service Provider please click Apple Authorized Service Provider Locator (AASP) & Genius Appointment
If you have not already, please reset the NVRAM 2-3 times and then test. How to reset NVRAM on your Mac For best results do this with all external peripherals (External Hard Disks, hubs, etc...) disconnected and do the resets back to back.
Good luck!
Try > Reset the SMC of your Mac - Apple Support
If that doesn’t help, then you may have a hardware or third-party utility problem.
How do I slow down the cooling fan. I've been having a problem with iMac shutting down. Now it runs full blast all the time its on
