I just installed Elementary OS Luna alongside Windows 7 on my custom rig via a CD. When my PC boots from the HDD, it enters GNU GRUB version 1.99-21ubuntu3.10 and asks what OS I’d like to enter. I can’t scroll through the grub with the arrow keys. I can't even hit enter to boot from the top entry. I've tried multiple keyboards with no luck. A member of the Linux distribution's official forum told me to check if FastBoot was enabled. Where would it be located in my BIOS?