I need some serious help here. My computer had froze on me and I couldn't do anything so I pressed the power button on my Powermac G5 to shut it down. After turning the computer back on, it freezes up on the startup screen(where the apple logo on the white screen is). The spinning process circle thingy is going but it's not going anywhere. I tried starting up with Safe Boot, but it's not working....I also tried force startup with "x" and it's not working. I'm running 10.3.9 on a Powermac G5 2.0. When I turn on my computer, I do hear a chime. It's just not starting up!!! Someone please help me to get this working. Thank you in advance.