File history error message

I have been getting a message for some time to recoect File History so I went to Control Panel and found File History.

When I opened it, it said that drive was discoected. But the drive it listed did not exist on my computer so caot to tu ON.

Have I done something ? How do I fix this ?

Windows 8.1 - The only drives showing are C Drive and DVD (Drive D). There is no (Drive F).