You can find just about anything on your PC almost instantly with Windows 7 Search
It’s easy. Start typing in the Start menu search box, and you'll instantly see a list of files on your PC. You can search by typing the name of the file, or based on its tags, file type, and even contents. To see even more matches, click a category in the results, like Documents or Pictures, or click See more results. Your search terms are highlighted to make it easier to scan the list.
Few people store all their files in one place these days. So Windows 7 is also designed to search external hard drives, networked PCs, and libraries. Overwhelmed by your search results? You can instantly narrow them by date, file type, and other useful categories.