I have a PowerMac G5 running OS X 10.3.9 and I am selling it. I am trying to use the cd's that came with it to restore the system to original factory. When I double click the Install Mac OS X and Bundled Software it says to click restart, I do, the computer then restarts normally and does nothing. I have tried restarting holding down the c key, the option key, nothing works. Help.