grub2 problem after f17 installation.

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http://forums.fedoraforum.org – I dual boot windows 7 and fedora. after i installed f17, when grub2 should load with the menu options, i get a message the says input not supported. i have no idea why. i can arrow up or down and get to windows or fedora but there is no text there to tell what kernel i am booting into. all it says is input not supported. I have tried reinstalling fedora and also have repaired the boot record of win 7. still the same thing. anyone have any idea what is going on ? (HowTos)