a virus change my files and folders in external drive to unknown format

hello

i have a serious problem with my external drive

a virus change my files and folders in external drive to unknown format.better i say my files and folder gone and some files with unknown format appeared.

i even don't know how to search for solve this problem!

this virus change drive name too.

properties show that data are exist in hard drive (457 GB used and 7.77 Gb Free space).

microsoft security essential scan drive in less than 2 second

screenshot

Click Here

after check disk files were deleted (after automatically fix file system errors)

after check disk (scan for and attempt for recovery of bad sectors) i received an error

screenshot

click here

please help me

best regards

Farid

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