I just recently purchased a PowerMac G4 it worked fine for a while but then the OSX started to freeze causing me to restart the system. Now when I turn on the system it loads the apple screen then shows it starting Mac OS X then just sits at the light blue screen with the mouse. Whats wrong with it? Also, I then proceeded to put another 40GB HD in and tried installing OS X 10.3 instead it was working fine formated the HD then with a min left in the install an error occured and the installation failed What was with that happening? Thank You any one that can help me with my troubles and I hope my Mac isn't scrap already.