shut down screen pops up?
I have a Ibook g4 1.42 with an 80GB hard drive 1.5GB DDR RAM,and has a new battery. I'm running tiger on it and it runs really good the problem is I get a little black screen that pops up and tells me to restart using the power button. This happens often and while I've been on the computer for about a hour or less.
Why does this do this and how can I fix it?