2017 Views 4 Replies Latest reply: Oct 6, 2009 2:20 AM by MacMan 71
this can happen if you reset smc using the old method of holding down the power button when you reconnect the power cord. do another smc reset, but do it according to:
that should clear up the maxed out fans and missing temp sensor readings.
I had the same problem and have resolved the problem so wanted to share with everyone.
Unplugged everything from my mac and left for 60 seconds.
Plugged everything back in.
Pressed and held keys:
Kept these keys held until I heard the start up 4 times.
Then released buttons and problem was solved.
have you tried this before resetting the SMC? http://support.apple.com/kb/TS1433
If not it still doesn't work, it's not software, it's hardware. to confirm it's hardware, have her start up from the boot CD and see what the fans do. I hope your mom's imac gets fixed (hard to do when you're not even there)