A program window or input dialog box is off the screen and I cannot see it.

Make sure the application is your focus by clicking on its icon in the task bar.

1. Right-click on the program preview just above the task bar. 
2. If "Maximize" is an option,  click it. This will correct the issue. No need to continue with the steps below.
3. If not, click "Move"
4. Press any Arrow key.
5. Move mouse widely, left and right.
6. Click the left mouse button when the application is visible on screen.

For another keyboard method:

1. Press Alt + Spacebar
2. Press the letter: M (Move)
3. Press any Arrow key.
4. Move mouse widely, left and right.
5. Click the left mouse button when the application is visible on screen.