The hard drive in my 17" iMac G4 (the one with the dome base) needed replacing so I took it apart and put a new one in with instructions off the internet. I put it all back together and booted up. It just sits there with the blinking question mark. This means the system software needs to be installed on the new hard drive? Assuming this, I plugged in the USB keyboard and hit eject. Restart, hold eject. Just trying to put the install CD in. Nothing. Could I have accidentally disconnected the buses or is there some other way to go about installing the OS on the new hard drive?