mac powerpc ibook g3 blank screen on start up

[Andy Recker]

i installed the power PC version of free BSD and put it on my mac i book g3
i was in the insulation process when i couldn't get it to work because of a
few errors and i decided to turn it off and restart when i turned it back
on it only booted to a blank white screen it has nothing on it and nothing
is responsive i have tried to reboot the same CD i had the first thing and
still just a blank screen what can i do to get BSD to work on my computer?