Posts: 72 from 2011/11/18
Damn, my Powerbook keeps shutting down suddenly. :(
I've got a machine that reboots/freezes suddenly too... There could be many reasons for that.
Thats true but I will try to isolate this problem.
So I can exclude a heat problem.
Fallback battery has been replaced (due to some apple forums this can be a cause too)
Faulty main battery - I will ordner a replacement over e**y
Faulty powersupply - I will lend me a 65W supply from a friend soon
Reset OF back to factory defaults - will try that(*1)
Reset PMU (I am not sure if this isn't the same as the one above) - will try that too(*2)
Hold the Command+Option+O+F keys during startup. At the prompt type:
If the computer is on, turn it off.
Reset the power manager by simultaneously pressing and then releasing Shift-Control-Option-Power on the keyboard. Do not press the fn (Function) key while using this combination of keystrokes.
Wait 5 seconds.
Press the Power button to restart the computer.