Sometimes it may happen that you have no mouse. But you have to keep going your work on computer.Work on a computer without mouse is not impossible but it is difficult as you need to know almost all the function of every key and shortcuts. Windows operating system provides you a facility named MouseKeys which lets you control the mouse pointer by using the numeric keypad on your keyboard.
Pressing the left ALT, left SHIFT and NUM LOCK keys will open a window named MouseKeys. From where if you select the ok button, it will turn on MouseKeys. Then you can use numeric keypad of your keyboard (1-9) to move mouse pointer every where in the monitor screen.
You can customize the MouseKeys options by clicking Settings button which will open a window named Accessibility Options. Selecting the Settings button will open a window name Settings for MouseKeys. From that window select the options according to your choice and press the ok button.
It’s as simple as this