I installed a 40GB hard drive in dell dimension 4400, started it, and went to setup. I set the boot to use CD-ROM as first choice. Placed fc9 dvd in drive, and restarted. It went to grub. I took out the dvd, and put in an AsteriskNow! cd, and restarted. It went to grub prompt, again. Any help to get computer to start and use CD-ROM drive? Tom