If there is an issue with the filesystem, it needs to be fixed.
There is only one reliable option to repair a damaged NTFS filesystem, and that’s chkdsk, which must be run from an elevated command prompt in a Windows environment.
Typically chkdsk x: /f is all that’s needed – depending upon the severity of the damage – if there are bad sectors, for example, then other parameters should be used with chkdsk, which can potentially take a very long time to complete.
Some reading material follows, which contains (among other things) a few possible workarounds to run chkdsk if you no longer have a Windows OS.
Enjoy!