Magnifier enlarges only a portion of the screen while you work, leaving the rest of your desktop in a normal state. You control which areas of the screen Magnifier enlarges.
Open Magnifier by clicking the Start button , clicking All Programs, clicking Accessories, clicking Ease of Access, and then clicking Magnifier.
Make any of the following adjustments:
To see an enlarged version of what your mouse is pointing at, select Follow mouse cursor.
To see the area where your pointer moves when you press the TAB or arrow keys, select Follow keyboard focus.
To see what you're typing, select Follow text editing.