So I had a hard drive go bad, and I replaced it today. I had the windows CD in there, it installed, or at least mostly installed, and the screen went black. I know I'm supposed to delete the ati driver in there, but I have no way of getting to the cmd prompt to do that. These are my options right now: 1) I boot without pressing buttons, it tries to start windows, and I get a blank screen. 2) I hit f8 and get boot options like safe mode. I try safe mode and it says "configuring your computer for first use" and a large error pops up and says windows can't complete installation while in safe mode. If I click okay, it reboots and I'm back where I started. If I click the x, it just sits there forever configuring my computer for first use. 3) I don't know how to get the imac to boot from CD so I can repair or do something else. As I understand it, there is no BIOS to change settings in. Does anybody have a solution for me?