If you suspect bad sectors, you need to use a slightly different command with chkdsk:
chkdsk x: /r /x
Note that chkdsk x: /f does not check for bad sectors.
Note: Substitute the X for your actual drive letter in Windows – chkdsk must be performed from an elevated command prompt. For more specific information please see the chkdsk documentation at Microsoft.
ntfsfix is not recommended for NTFS filesystems, and in any case, does not do what you expected it might have.
Everything you need is on the following page. All you need do is read and understand it.
Cheers.