Fedora Booting Error, "ERROR : FILE NOT FOUND "

HI ,
i tried to upgrade fedora 15 to 16, after upgradation the fedora screen comes as normall, but while hitting enter key
error is coming, its not loging to the OS can any one suggest solutions…

It seems like issue with Grub do one thing shift to old kernel after rebooting the server and check still you are facing the same issue or not

and also plz share the content of your /boot/grub/gurb.conf file