What can you do when Computer hangs up?

What can we do then if our computer system do not shows us any respond? We have to use our keyboard & persistence in this situation.

In Windows Xp it’s a familiar problem which named as “Not Responding". If you are in the middle of any important work & your Os becomes hangs up firstly, do not press any key for some seconds. Then gently & gradually press the “Num Lock” button from keyboard. If it don’t brings your Computer system in a helpful position press the Alt+Tab key from keyboard. If it fails to work, press the Ctrl+Alt+Delete from keyboard & End the process that you don’t need. 

  

Flow Chart  of error reporting service