If your mouse is damaged but has not been repaired or replaced, you can temporarily use a keyboard to replace the mouse as instructed below.
Instructions for setting the number keys on the right hand side of the keyboard to use instead of the mouse:
Click Start -> Control Panel .
The dialog box appears, click on the Ease of Access Center section .
Make sure you click Make the mouse easier to use .
Turn on the mode using the mouse by locking by checking the Turn on Mouse Key and then clicking OK to complete the setup.
Note after creating the area to the right of the keyboard to undertake the task of the mouse. We have the following mouse control diagram:
Good luck!