WIndows Short-cut Key

Ctrl + Esc ------- Start menu
Alt + Tab--------Exchange the running program window
Alt + F4---------Close a program
Shift + Del-------Delete a file permanently from your hard disk
Win + L----------Lock your computer
Shift + F10-------Right click
Ctrl + Shift + Esc-------Task Manager
Shift + Alt + Del--------Task Manager
Ctrl + F4---------------Close the document form several interface
Backspace--------------Back to the previous folder
Win + M---------------Minimize all program
Win + Break-----------System properties