== If you do not have firewire ==
'''(1999) you could meet Processor, RAM, and HD Specs ''but still fail system requirements.'' '''
''Take out the battery and unplug it. Do a command-p-r-power start and boot holding shift key down.''
'''If it boots''' immediately go to the energy saver and'' set it not to go to sleep or put the display to sleep.''
I think it's a "wake from sleep issue"...though IMnsHO actuality you'd be better off running only 10.3 (you're asking an awful lot of your old hardware running 10.4)
'''If this answer is acceptable please return and mark it.'''
Good Luck
N.