I just got G5 PPC Mac the user who gave it to me claims that it "died during an update. It will not boot from the CD. It was running 10.5 and I have the disk. Using the C key with 2 keyboards. I booted into the open firmware using opt-cmd--o-f . Open firmware is requiring a password. So I pulled the battery on the motherboard and left it unplugged for a few minutes. No luck still wants’ a password. Dropped in more ram and reset the pram 3X. It still wants a password. I have asked the user if she had to enter a password to boot up and she said no just at the normal log in. So I'm guessing that the firmware is corrupt and since I can't boot from a cd I don't know how to reload it. Any ideas?