It's possible that it didn't install correctly. I would check for smudges or scratches on the discs and then try using them again. You could also try restoring default settings in your bios as this has been known to fix similar problems on quite a few devices.
F12 on power on to enter bios, F9 for defaults. F10 to save.
Own a Predator Laptop? Then I bet you have learned a thing or two from beststevie. He has been helping out in this forum for quite a while and it's about time we recognized him for it. Thanks beststevie!