I have a problem with my PB 12'. Sometimes with no warning the computer just crashes/freezes. It stops working with just the fan running. The only thing I can do is restart by pressing Ctrl+Command+startButton or holding down the startButton until it shutdown.
I have searched through the logs but can't find anything. Where can I look to find out what it is that's responsible for the crashes?
I have run Memtest and hardware test but it finds nothing.
The temperatures when it crashes is 62 degrees Celsius for the graphic card and around 50-55 for the CPU. Can it be that?
I have installed an extra memory module of 512MB:
KINGSTON 512MB MEMORY MODULE - KTA-PBG4 266/512
My configuration: PowerBook G4 12'', 768MB RAM, 60GB HDD, Superdrive.