When I try to boot to numerous cd's/dvd's (10.3 retail, G5 restore disc, 10.0 retail) my G5 freezes right away on the initial Apple (logo) screen. It looks like the apple logo shifts a little to the right and then does nothing. Do you know what may cause this? I made sure that the system has nothing but original components. It does the same thing if I try to boot to disc with no hard drive installed. The only discs I can get it to boot to are an Apple hardware disc (which I ran and everything passed) and a newer G5 restore disc with OS10.4. I was hoping to load 10.3. Any help would be greatly appreciated. Thanks.