Shuttle SS56Gv3 install/boot problem

I was attempting to install Windows MCE on my new Shuttle when it stalled at the stage where I'm supposed to select the partition where to install the OS. I rebooted the system and after showing the BIOS information the screen says "Boot from CD:_", but whenever I put in the MCE CD (or my old XP CD), it doesn't read it. :mad: I don't think its a problem with the CD drive as it read the disk the first time round.

How can I get around this or maybe reset the system back to its original state?