Well, I was trying to update the blue and white g3 powermac to Mac 10.2.8. It originally had 10.2. Well after it installed, the mouse didn't work but the keyboard functioned. Then I tried to restart it again and then it didn't even boot up, it only stayed on the Gray Apple Bootup screen. I tried to reset the pram (comand-p-r) but i had no luck. I triple checked all connections and even tried a different keyboard and mouse and nothing changed. Then I tried to boot from the jaguar cd and the mac was still stuck at the grey boot screen. Any suggestions?