ok so my powerbook updated some shit the other day. and it restarted. then when it gets to the grey screen it just stops. all i see is the apple and then it just stays there. i searched grey screen on apple service site. i have a powerbook g4 1.67/1.5ghz and i reset the power management. i aloso tried reseting the nrvram in that "mac-boot" screen. and it's still stuck. i no longer have the apple phone service crap cause my 90 days is up. im also at home and i left my install disk back at school. is there anything else i can do?