[munna85]

1. Taskbar:
Action---------------------------------Keys
Open the Start menu-------------------Ctrl + Esc
Find a file or folder---------------------F3 or Esc + F3
Minimize all windows--------------------Wins + M
* Keyboard Shortcuts For Desktop, Explorer, Folder/Drive Windows, Common Dialog Boxes:
Action-----------------------------------------Keys
Find a file in Explorer or folder window -----------F3
Open drop-down folder/drive list -----------------F4
Move up one level in Explorer/folder window ------Backspace
Refresh or update a window ---------------------F5
Select all items ---------------------------------Ctrl + A
F6 to switch between panes in the active window
and
[Windows] + E to open Windows Explorer (Computer/My Computer
and
[Windows] + [Pause/Break] to open Sytem Properties

Ctrl+PrtScr to send a screen shot to the clipboard

and
Ctrl + X,C or V to Cut, Copy & Paste respectively.
and
Ctrl + Z & Y to Undo and Redo

Ctrl+P to print
Ctrl+S to save
Ctrl+O to Open

Alt+F4 to close current Window/App
Alt+Tab to step through the active windows
Press Windows key + L = Windows lock
Press Windows key + U = Utility Manager
Press Windows key + D = Window minimize
Press Windows key + R = Run command
Press Shift + Delete key = Permanent delete
Press Ctrl + F key = Find data
F1 = Help and Support Center
Ctrl + L = highlights the address bar in browsers
Ctrl + Shift + T = open last closed tab