Resetting PRAM, NVRAM, PMU in Powerbook.
PRAM: Restart computer, hold Command>Option>P>R. Wait for 3-5 chimes then allow the computer to boot normally.
NVRAM: Restart Computer, hold Command>Option>O>F. Machine will boot to a white command line screen. Type reset -nvram, press Enter. Type reset -all press Enter. Type reboot, press enter.
PMU: Shutdown Powerbook, disconnect power adaptor, remove battery, press Power button for 5-10 seconds. Reinstall battery, plug power adaptor in, and restart the machine.