Usually there is a file system or important files were hidden by Windows. Here is trick how to display hidden files and folders.
On the Windows operating system, windows that open on each like when we double click My Computer
Go to menubar and you will find some options File, Edit, View, Favorites, and Tools
Steps to show hidden files and folders:
1. Select the 'Tools' menu, then go to 'Folder Options'.
2. Then select the View tab, and locate the folder Files and Folders. Go to Hidden Files and Folders option.