leo4all v3 will not boot
 

Here is my setup

MB: GA-G31M-ES2L
CPU: Core2Quad q6600 2.4ghz
BIOS version: F4
HDD: WD 320gb sata
DVD: Lite-on sata

I downloaded leo4all v3 burned image to dvd using alcohol. The only thing that I have done in BIOS is change the boot order to boot the cdrom first. I read that something has to be done to the AHCI but i cannot find that anywhere in the BIOS, however there are lots of settings for sata. When i try to boot it stops on the "Boot from CD/DVD : " prompt.

Can anyone help?