Stuck at grub console after install

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http://forums.fedoraforum.org – So, I installed F12 x86_64 and the installation completed without an error, but when I reboot it stops at the grub console. When I try to do things in the console I get various errors mainly "error 21: selected disk does not exist"; I don't really know what I'm doing in grub, so it might just be me doing something wrong. I have tried reinstalling and the error occurs both when I install with the kde live cd and with a dvd usb. Any help or suggestions would be appreciated. (HowTos)