Power mac G5 no OS, no display
I just recently bought a powermac G5 1.6ghz with no hard drive. I put a new one in with no hard drive. A couple times when I turned it on I got the grey screen with the folder and question mark. I just got snow leopard for it, I'm not sure if I could use it for this but when I tried to turn it on nothing appeared on the screen, the monitor light turned green for 5 seconds then went yellow. There was no flashing light on the powermac just a solid light and a chime. I am a new mac user so I don't have a mac keyboard or mouse. But now every time I turn on the mac it chimes and the screen is black with the cd drive opening by itself. I replaced the PRAM battery too. What do I have to do to fix it, and do I need a mac keyboard and mouse to fix it?
PowerMac, Mac OS X (10.6)