I wanted to use the numeric keypad located within the keyboard. I pressed the NUM LK key to turn it on, but when I pressed on the alpha/num keys, the letters displayed, not the numbers.  I checked my system manual to see if I was doing something wrong and it said that's what I was supposed to do.  I searched for articles on Dell support and found an article that talked about updating the BIOS setup.  It said to press ALT + P and a page is supposed to display where you can enable the numeric keypad.  I accessed the system setup but didn't see anything regarding enabling the numeric keypad.  When I pressed ALT + P, it just beeped.