External Hard Drive Not Accessible

When I try to open my external HDD i get the error :-
F:\ is not accessible
The Volume does not contain a recognized file system.

I understand my problem will likely be solved by formatting the drive, however I would prefer to avoid that. I ran chkdsk and got the following report :-

Microsoft Windows [Version 10.0.10586]
(c) 2015 Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>chkdsk /f /r /x F:
The type of the file system is NTFS.
Volume label is Asad's HDD.

Stage 1: Examining basic file system structure ...
128256 file records processed.
File verification completed.
1 large file records processed.
0 bad file records processed.

Stage 2: Examining file name linkage ...
129136 index entries processed.
Index verification completed.
0 unindexed files scanned.
0 unindexed files recovered to lost and found.

Stage 3: Examining security descriptors ...
Security descriptor verification completed.
441 data files processed.
CHKDSK is verifying Usn Journal...
Usn Journal verification completed.

Stage 4: Looking for bad clusters in user file data ...
Windows replaced bad clusters in file 815
of name \TV Shows\House MD\HOUSEM~1\AC3FIL~1.EXE.
Progress: 13550 of 128240 done; Stage: 10%; Total: 82%; ETA: 0:23:39 ...Progress: 13597 of 128240 dProgress: 13735 of 12 Windows replaced bad clusters in file 104188
of name \$Extend\$RmMetadata\$TxfLog\$TxfLog.blf.
Windows replaced bad clusters in file 104189
of name \$Extend\$RmMetadata\$TxfLog\$TXFLO~1.
128240 files processed.
File data verification completed.
An unspecified error occurred (766f6c756d652e63 461).

C:\WINDOWS\system32>
C:\WINDOWS\system32>