My power mac G5 does not boot fully. I took it to the apple store the genius bar guy tested my ram so I know it's not the ram. The hard drive is still intact. He told me it might be the logic board and it was about a $1500 fix. He was never able to boot it up. It's about 5 years old. I brought it home and it sat for a couple of weeks. I plugged it in and thought I'd give it one last try. I tried a few times with no luck. I zapped the pram and then rebooted and it started up! I was able to back up most of the stuff I wanted. It locked up and now I can't get it to start up again. Now it starts, I hear a long (1full second) dull beep and it goes no further. The fan also periodically starts spinning so fast it sounds like it's gonna take off. Does this sound like it can be fixed? Is there anything I can do? I won't invest that kind of money on a 30-90 day warranty PLEASE HELP!!!!Or, do I need to go get a new system?