1. – Open an elevated command prompt
Start > Search “cmd” > Right Click cmd.exe > Run as Administrator
2. – Leave Command prompt open; Open task manager
3. – End process “explorer.exe”
4. – Switch back to command prompt
5A. – FILE – Change to the directory of your file and delete it.
First run this line: cd “PATH OF YOUR FILE”
i.e. cd “%USERPROFILE%”\Downloads”
Now run this line: del filename.extension
i.e. del filename.mkv
5B. – FOLDER – Delete the folder.
Enter Command: RD /S /Q [DRIVE:]\PATH\TO\FOLDER
i.e
RD /S /Q C:\Users\[username]\Downloads\FOLDERNAME
6. – Switch back to task manager
7. – Start “explorer.exe” by clicking “File” menu at Taskbar and click “New Task(Run…)” and then type this “explorer” in the box….. then finished.
Or if this wouldn’t help for some files….. check this website;