when mouse isnít working properly , this trick can be very helpful. to activate mouse keys all you do is press alt+left shift key + numlock and click ok or press enter .

use the numerical pad for controlling the mouse pointer.
5 is for click.
+ is for double click
- for right click.
on screen keyboard
on screen keyboard is one of the coolest windows features that displays a virtual keyboard on the computer screen that allows people with mobility impairments to type data by using a pointing device or joystick..
to use it go to start-> run and type osk