Usually maximum of us depend on Mouse as it is easy to use. And we don’t know the all keyboard shortcut. Think, if your mouse not works properly or fully damaged and you have not enough time to go computer shop. What you will do if you don’t know the way of use of keyboard as mouse?
1. Go to Control Panel and open“Accessibility Options”. Now Choose Mouse tab and mark the check box “Use MouseKeys”. (If you like to configure more, open Settings) Then Apply and OK. If all is OK, you will see a Mouse icon on your task pan.
2. You can also active this by pressing Alt+Left Shift+ Num Lock keys. This key board short cut also used to deactivate. Now use your numerical key pad as the mouse.
Cause of this transfer you can read at this link