I can’t Find a File, But I Know is There

Affects : Windows XP/Vista/7

Description : Sometimes a file doesn’t appear even though you know that it should be there because of information you’ve received from a reliable source.

Solution : This happens because hidden files and folders are still enabled on your PC. Although most people turn this feature off at some point, PCs almost always ship with hidden files and folders on.
Open Control Panel and then Folder Options, then click on the View tab and find the two radio buttons under Hidden Files and Folders. Select the one that says “Show hidden files, folders anddrives.” If the mystery file is where it’s supposed to be, it should now be revealed.