855 Views 1 Reply Latest reply: Mar 24, 2012 5:33 PM by BDAqua
Have you done a PRAM reset, CMD+Option+p+r...
Does it boot into Open Firmware with CMD+Option+o+f ?
reset-nvram (press Enter)
set-defaults (press Enter)
reset-all (press Enter)
How to reset the SMU/PMU on a Power Mac earlier G3, G4, G5 models...