Startup Disk menu can no longer detect the hard drive

I am trying to boot my dvd from the startup disk menu (the screen when you press alt and brings up Mac or Windows) as Paragon CamptuneX has adjusted my directory files when I expanded the partition size and it is required to boot from the windows DVD to reorder the directory. But for some reason, the startup disk menu cannot find the dvd drive? I can hear it spinning and there is no problem detecting the DVD once I boot into Mac OSX.......

Any ideas what I should do? I'm trying to avoid cleaning out Bootcamp, and reinstalling it all over again....