Windows 7 Recovery DVD Grey Screen


I've recently purchased the Windows 7 Recovery DVD in an attempt to reset my Windows Boot Manager as I have accidentally deleted Windows 7 off the list and therefore can no longer boot into Windows.

When I boot from the CD, I see a menu with several options for a split second before it disappears and a whole lot of code begins spewing out, starting from "Loading /boot/bzImage...." and a bunch of green "[OK]"s before leading me to a grey screen with a black cross in the middle. Pressing any key or moving the mouse does nothing in this state.

Any help would be greatly appreciated!