Since Windows 10 cannot find any, it's giving me the option to perform a deeper search by giving me the option to 'Search for documents' matching the PPTX extension. You can see from this screenshot that I'm trying to search for all files with a PPTX extension. Just type in the file name or part of the file name and Windows 10 will attempt to find the files matching your query or will present you with an option to perform a deeper search. As with Windows 8.1, you still have the option to search for files directly from the search box. Let's first go over the simplest way to find files by using the search box. Not only can you search the standard search method by using File Explorer you also now have Cortana, which allows you to search for files by voice recognition or the new Windows 10 My Stuff dialog, among others. There are numerous ways to search your computer for files. In Windows 10, it's easier than ever to find the files you're looking for.