I have a Dell studio laptop. Recently, within the

1. In order to fix this, you go to control panel > mouse
the last tab is called "Device Settings" click it and make sure you have "static tray icon in taskbar" selected.
(You can always remove this later.) Apply the changes and click the red coloured icon in your task bar. An option will be available called "Tap to click." Clicking it will enable you to tap with your mouse pad instead of the keys! Hope this helps you out, I know it helped my friend.

2.
In the Control Panel open Accessibility Options Icon and click Mouse Tab and than Setting.
To move the mouse pointer by using MouseKeys
If you have not already done so, turn on MouseKeys.
To turn on MouseKeys, open Accessibility Options, click the Mouse tab, and then select the Use MouseKeys check box. Use the buttons on the numeric keypad to move the mouse pointer. If MouseKeys doesn't function, press NUM LOCK, and then try MouseKeys again.
To move the pointer horizontally or vertically, press the arrow keys on your numeric keypad.
To move the pointer diagonally, press HOME, END, PAGE UP, or PAGE DOWN on your numeric keypad.
Notes To open Accessibility Options, click Start, click Control Panel, and then double-click Accessibility Options.
To specify whether NUM LOCK must be on or off for MouseKeys to function, on the Mouse tab, click Settings, and then for Use MouseKeys when NumLock is, click On or Off.
To change the pointer speed and acceleration when using MouseKeys, on the Mouse tab, click Settings, and then move the sliders to adjust the pointer speed and acceleration.
To temporarily increase or decrease the pointer speed, on the Mouse tab, click Settings, and then select the Hold down Ctrl to speed up and Shift to slow down check box.