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Type cmd (Command Prompt) in the Start menu search bar, then click Run as administrator.
chkdsk /f Attempts to fix errors while scanning your hard
drive’s file system.
chkdsk /r Attempts to repair sectors on your hard drive so that
they're readable within the file system. This command also
runs the chkdsk /f functionality, which is a deeper check.
chkdsk /f /r /x Scans the file system, its sectors, and fixes any errors it finds
with the same command. If necessary, it also
disconnects the drive first.
If it is happening after the Windows Update then try to uninstall the update. Alternatively, you can go for a System Restore. Select any restore point when everything was fine.