If you've ever wondered how many files are on your computer, you will be pleased to know that you won't need to painstakingly count them individually. There is a simple method for finding out. Using your computer's command prompt, you can request a calculation of the total number of items (including files and programs) on your computer.
Access your start menu and click "Run." If you're using Windows Vista, type "Run" into the search box; click on "Run" when it appears in the search results.
Type "CMD" into the run text box. Click "Ok" to bring up the command prompt.
Type "dir /s /a-d c:\" (don't forget the spaces--or the command will not work). Hit "Enter" on your keyboard.
Wait 5 to 10 minutes for the system to count the files on your computer. The process may take longer, depending on your computer's speed and the number of files you have.
When the system stops, scroll to the bottom to view the total number of files. It will be under "Total Files Listed."
You can also view the total number of bytes used, as well as the number of bytes available.