I'm trying to repair a computer for my hockey buddy and I ran into this problem. His HD is defective. In fact, it's so bad that when I slaved it to another computer, it wouldn't allow the computer to boot. He has another HD of equal size so I figured that I would install the OS on that HD and get him back in business. I tried booting with the OS disk in and I just get the message that "There's no OS installed." Could I slave that HD on another computer, install the OS on that HD and then put it back in the original computer? I checked the BIOS to ensure that the boot order had the CD first.