G4 PowerMac (sawtooth i think) 400 MHZ COMPUTER, 512MB of Ram, 20Gig Hard Drive it originally had Panther but it was buggy and I have tiger so I wanted to upgrade it. But when I went to upgrade it needed the users password. And I bought my mac off of ebay and the owner didnt remember the pass. So he said to go and restart and go that way. But everytime I put the disk in and it reads then my comp says restart. I never get passed this point. I have Mac OS 9.2.2 but It wont erase the drive it installs but all the old stuff is there. Is there some way I can fix this thing??? I can't afford a new Mac I just wanted to try one out this is so crazy! lol