Sometimes your "Start" button will disappear from your Microsoft Windows desktop. When this happens, the task bar with the "Start" button on it is most likely hidden off-screen. The "Start" button is usually located in the bottom-left corner. If it disappears, you can get it back.
Move your cursor to the bottom of the screen -- or to the last location of the "Start" button.
Click and hold the left mouse button and drag the task bar to the desired height when the cursor turns into a thin arrow pointing up and down.
Click "Start" once it's showing. Click "Control Panel," "Appearance and Personalization" and then "Taskbar and Start Menu." Un-check the box next to Auto-Hide the Taskbar and click "OK." Your "Start" button should not hide anymore.
You can access the Start menu without the "Start" button by clicking the "Windows" key on your keyboard.