Launching File Explorer
To display the Search box from the Start screen, place your mouse over the upper-right corner of the screen, move the pointer toward the bottom of the screen and click "Search." Type "File Explorer" and click "File Explorer" in the list of search results. If you are in Desktop view, the File Explorer icon is displayed in the taskbar by default; click it to launch the app.
Using the Secret Menu
To quickly launch File Explorer, use the secret Power User menu; press "Windows-X" to display the menu and click "File Explorer." The Windows key has the Windows logo on it and is usually located between the "Ctrl" and "Alt" keys in the bottom-left corner of your keyboard. The secret menu contains shortcuts to many frequently needed utilities, such as the Control Panel, the Command Prompt and the Task Manager.