I have been using my ibook for about two years. Suddenly when it is put into sleep mode either through the menu or by closing the lid the computer shuts down, and if it can be wakened displays the message that it 'must be shut down' by pressing the power key. What is happening and what should I do.
_____________
iBook G3: 500MHz: 256 MB memory: Mac OSX 2.5
_____________
_____________
iBook G3: 500MHz: 256 MB memory: Mac OSX 2.5
_____________