Try these cool cheats, it will help you work more efficiently with Windows 7, these need combination with 'win' ( a button with windows flag).
1. Win + Home = Minimizes all but the current window
2. Win + Spacebar = Preview Desktop (makes all open windows transparent)
3. Win + Up Arrow or Down Arrow = Maximizes the current window or minimizes/restores the current window
4. Win + Left Arrow or Right Arrow = Tiles the window on the left side(or the right side) of the screen
5. Win + P = Chooses a Network Projector presentation display mode
6. Win + Alt + 1..0 = Accesses the Jump List of a program pinned on the Taskbar in the position indicated by the number
7. Win + T = Cycles through the items on the Taskbar
8. Win + 1..0 = Launches a program pinned on the Taskbar in the position indicated by the number; or accesses a running program on the Taskbar in the position indicated by the number
9. Win + Shift + 1..0 = Launches a new instance of a program pinned on the Taskbar in the position indicated by the number
10. Win + Ctrl + 1..0 = Accesses the last active instance of a program pinned on the Taskbar in the position indicated by the number
