Please see if the dvd disc boots on another pc (a friend's?). Make sure that particular unit has the dvd drive first in boot order. Virtually all machines come stock with the hdd first.
It does not matter a whit if it can be read WITHIN windows. You have to first determine if the alleged "bootable" disc is indeed bootable. You could have burned it thinking you were going to get a bootable disc, but something may not have gone right.
You haven't told us if the disc is dual-layered and if your drive, the one you're trying to boot with, is new enough to read it. You haven't published any specs.