what does the comands below say (typed in a console)
fdisk -l
dmesg|grep sd
dmesg|grep ub
they might help us help you.

DANGER
DANGER
DANGER

NOT tested
NOT recomended
a POSSIBLE "quick fix" that i have thought of, never tried or heard of, might be using fdisk and resetting the partition type to ntfs, this might be what is required BUT it may also DAMAGE things for you. just a thought,
NOT tested
NOT recomended (by me atleast)

DANGER
DANGER
DANGER