Phonebook error on my siemens sl55, " system drive error "?

Hello i would appreciate any help on this error on my Siemens SL55, working fine Until i went to delete the phonebook on the phone itself, it said " File System Error " and " Drive Error " and " Driver Error ".

Now it will not access the phones address book, but it will access the Sim Cards Address Book, has anyone got any suggestions.

Thank You All