How do I enable Windows to Show/Hide all files?

By default, Windows Explorer does not display files with attribute set to Hidden. Use this method to make Explorer show all the hidden files:
  • Click Start, and then click Control Panel
  • Double-click Folder Options
  • On the View tab, under Hidden files and folders, click Show hidden files and folders
Hidden files and folders will appear dimmed to indicate they are not typical items. Usually, hidden files are program or system files that should not be deleted or changed.
Still some files remain hidden?
Windows XP adds another layer of hidden files, known as "Super-hidden" or Protected Operating System files. Generally, these protected files are not intended to be visible for the user as they're not intended to be modified by the user. To display other hidden files, clear the Hide protected operating system files (Recommended) check box.