And Windows will not let you use the disk and dive into the data, till you format it.

And you have two options: Eighter format it or attempt to repair bad sectors and errors.

Once the process is complete, cycle your gear and try accessing the drive again.

After the disk check completes, try accessing the drive and see if the error persists.

Before performing Any other troubleshooting perform a virus malware scan is a good solution.

Simply roll out the latest updated Antivirus and Run a virus scan.

Testdisk utility

FirstDownloadthe Testdisk utility to your box by following the download link.

After the download is finished, Extract All data to a specific folder.