After opening an application, the program window may not be seen even though the program appears in the taskbar. This happens when the window opens outside of the view area of the monitor(s). There are a couple of ways to resolve this problem.
First, try clicking the “Show Desktop” button a couple of times. This will often bring the open windows back onto the screen. In Windows 7, the “Show Desktop” button is cleverly hidden to the right of the clock/systray on the taskbar.
If you still can’t see the window then hold down SHIFT and right-click the application in the taskbar. (In XP you do not need to hold down shift.) You should get a menu with an option to “Move” the window. Click Move and use the arrow keys to position the application in the visible area of the screen. Once the window begins to appear on the screen you can then usually use the mouse to move the window.
If the “Move” option is greyed-out, you’ll need to select “Restore” first. Once restore is selected, you should be able to move the window.