Have you ever changed your display resolution or moved an application window to where you could no longer grab the top of the window to resize it?
Or maybe you use dual monitors with a laptop and undock it, only to forget to move the window (or windows) back to the primary desktop, but you can still see the application in the taskbar and can't do anything with it?
If so, there is an easy trick that will bail you out and let you bring windows back on screen with out giving up and rebooting your PC.
First, right click on the application tab in the taskbar and select Move . If right clicking and the Move option is greyed out, try using ALT+TAB to select it and bring it into focus on the taskbar.
After selecting Move, your cursor will change to the "Move" mode displaying four arrows as shown in the following screenshot:
Now using your keyboard, press once either Left, Right, Up or Top keys, then move your mouse until the Window appears on the Desktop. You can also continue to press one of the arrow keys to move the Window back on screen manually.
This trick works great for recovering off screen windows especially if you use remote control utilities that tend to cause display problems and resize windows to point where you can no longer grab it with the mouse to move or minimize.