> >On the 30th of May 2010 >Robert Green wrote > >I have an intel mac running 10.4.11. When I set the sleep mode to >automatically put the computer to sleep after a set time it won't >wake up. I can hear the computer running but the screen stays black >and I have to restart to get it working again. ------------------------------------------- I have an 17" Aluminium G4, with an occasional problem similar to yours. In my case, I need only to press the button to increase the illumination of the desktop.