If you often find yourself wondering where a particular file has disappeared to on your PC, but you know at least some of the file's name, then a free utility called Ultra Search is what you need. Because it finds only filenames, and doesn't actually search the contents of files, it's very quick to use and it doesn't need to waste time or disk space in maintaining an index file. Just fire up the program, type some of the filename in the search box, and you'll have your results in a couple of seconds. Even if there are tens of thousands of files on your PC.
Download Link: http://www.jam-software.com/ultrasearch/