Hi! So, my fans are running really loud from the moment I start up my iMac '09, SSD installed, and I'm typing this really fast because my computer tends to shut down (only starting with the fan issue). I've tried SMC resets and PRAM resets and SafeMode cache clearing, nothing works. What do I do?
iMac, iOS 8.3
Pre-Mavericks
Open Activity Monitor in the Utilities folder. Select All Processes from the Processes dropdown menu. Click twice on the CPU% column header to display in descending order. If you find a process using a large amount of CPU time (>=70,) then select the process and click on the Quit icon in the toolbar. Click on the Force Quit button to kill the process. See if that helps. Be sure to note the name of the runaway process so you can track down the cause of the problem.
Mavericks and later
Open Activity Monitor in the Utilities folder. Select All Processes from the View menu. Click on the CPU tab in the toolbar. Click twice on the CPU% column header to display in descending order. If you find a process using a large amount of CPU time (>=70,) then select the process and click on the Quit icon in the toolbar. Click on the Force Quit button to kill the process. See if that helps. Be sure to note the name of the runaway process so you can track down the cause of the problem.
Do the SMC reset 2-3 times back to back. If the problem persists you likely have a failing fan sensor, that is hardware and needs to be take in for service.
Hi all, thanks, I've already tried doing multiple smc resets, and I just checked the activity monitor, so it's probably the fan sensor. Thank you!
Fans running loud
