Error mounting USB drive: "wrong fs type, bad option, bad superblock on /dev/sdc1, missing codepage or helper program, or other error"

I am unable to access my USB drive (/dev/sdc1). When I try to mount it at /media/pc, I get the following error:

USB Drive: wrong fs type, bad option, bad superblock on /dev/sdc1,           missing codepage or helper program, or other error