Use Keyboard As Mouse
 

When mouse isn’t 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

Thx for This

thanks for nice tip