Use the CTRL + ALT + Numpad [1-9] keyboard shortcut
You may also want to try using the CTRL + ALT + Numpad [1-9] key combination. It resizes and moves the currently active window into a part of the screen that corresponds to that number.
- Numpad keys 1, 3, 7 and 9 make the window occupy 1/4th of the screen and move it to the corresponding corner
- Numpad keys 2, 4, 6 and 8 make the window occupy half of the screen and move it to the corresponding half of the screen.
- Numpad key 5 resizes the window to full size and non-maximised, or toggles maximise if the window is already at that size.
Why this may be useful
I found that sometimes windows seem move "off-screen" when you try to restore them from the taskbar. In this case you sometimes you can't even see the window that moved off-screen, so you can't use the Alt + Drag method as you have no part of the window to grab onto (please correct me if this is inaccurate information and I was wrong). This method places the window somewhere you can see, so you can now resize and move the window again.