Eric,
I am not going to be able to tell you why this is happening, for that you would need to call in so Support can gather logs and your DR file.
I can however tell you how to get around it.
When you are at that screen you can press ALT+Z , a command prompt will open.
At this point you would either want to have a floppy with the Driver setup.exe to install from or have the drivers located on the HD, since at this point the drives have not yet been formatted.
Hope this helps you.
Patty