#Macbook g4 cooling mac os#
Personally, I feel that I am better than going to see a genius because most of them are just trained for Intel machines these days out in CA, where as, I know all the way back to PPC and Mac OS 7. I hope that I helped you solve your problem, but do post back if not and I will help you narrow down what is going on even further. Go to your closest Store next week after making an appointment with a Mac Genius: If the none of the above worked for you (not so great), do the following: If the above works for you (great), if not, try archive and installing: *Hold the keys down until the computer restarts and you hear the startup sound for the second time.* You must press this key combination before the gray screen appears.* *Press and hold the Command-Option-P-R keys. You will need to hold these keys down simultaneously in step 4.* *Locate the following keys on the keyboard: Command, Option, P, and R. If the above works for you (great), if not, try resetting PRAM and NVRAM: *Press the Power button to restart the computer.* *Press and hold down the power button for 5 seconds and then release the button.* *Disconnect the AC Adapter and remove the computer's battery.* I suggest that you first try resetting the PMU: Anyway, I know it says for high work loads, but you would be surprised how easily the fans will turn on high just from simply web browsing. Sometimes I just install those updates without closely reading what they are for exactly. I remember when this was released that PowerBook G4 owners were seeing this update via their Software Update application. It is possible that you are having these issues because you installed the MacBook Pro SMC Firmware Update 1.3 by mistake: