Ursprünglicher Beitrag von: mister790 ,
The loss of time and date information usually means all power has been cut off from the computer. On older computers, there was a separate PRAM battery that preserved that info when the computer was unplugged and the battery was dead. But folks on a recent thread ( http://www.ifixit.com/Answers/View/5181/Won%27t+boot+up ) have been saying that the G3 iBooks don't have a separate PRAM battery. So my best guess is that the main laptop battery is dead or was dead when you unplugged the AC. Is that the case? If the battery no longer holds a charge, you may have to replace it to maintain your time and date settings when the machine is unplugged.