Move the Pointer/Cursor with Keyboard

'Mouse Keys' is an inbuilt feature of 'Windows' that attempts to simulate the use of a  mouse/touch-pad via the Numeric keypad on your keyboard. Primarily, it is intended for users with a disability of some kind that prevents them from using a mouse/touchpad.

Steps:

1) Press 'left-Alt' key + 'left-Shift' key + 'Num Lock' key to open the 'Mouse Keys' Dialog.

2) Then click on 'Yes'

When enabled, you'll see the 'Mouse keys' icon in the 'Tray' bar (Windows 'Vista' & up).

'Mouse keys' icon in the 'Tray bar.

Numeric Keypad functions in 'Mouse Keys'

Moving:

Use the 9 numbers keys. 1-9 to move the cursor/pointer vertically, horizontally, or diagonally.
Selecting a Mouse Button:
Before you use 'Mouse keys' to click items on your screen, you must first select, which mouse button you want to be the active button, the left button or the right one, or both.                                                                           

Select the left mouse button     →           The forward slash (/)

Select both buttons                   →           The asterisk (*)

Select the right mouse button  →           The minus sign (-)

If you choose to make the left mouse button the active button, it will remain the active button until you choose another button. After you select a mouse button, you don't need to select a mouse button again until you want to change buttons.

Clicking items using 'Mouse keys':
After you chose a button, you can click items on your screen.

Dragging items using 'Mouse keys':
You can use the numeric keypad to press and hold the active mouse button and to release it. This is helpful if you want to drag an item.

Scrolling:
Point to the scroll bar→ Press zero (0) from the Numpad. Now press eight (8) to scroll up or two (2) to scroll down in the case of vertical scroll bar. If the Scroll bar is horizontal, use four (4) to scroll left and (6) to scroll right. Press period (.) on the Numpad to cancel the scrolling mode.

Disable the 'Mouse Keys':
Press 'Left-Alt' + 'Left-Shift' + 'Num Lock' again to disable the 'Mouse Keys'.

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