Sorry, I can't answer your question, but where did you find the hidden numeric keypad?  I can't find it on my Inspiron 5030!

Brianlb  <ADMIN NOTE:Email id removed per privacy policy>

Try Fn-F5

On my XPS Fn-F5 turns "scroll lock" on/off.

Fn F5 brightens the screen. Where is the hidden number pad and the number lock on an XPS laptop?

Studio XPS 1645 does NOT have a way to turn numlock on.

If you run quickset, you'll notice that there's nothing about function keys or keyboard, other than the backlight.

Is there a "hidden" num pad? How did you find it?

AHA!

If you press (Fn) and the corresponding key, you get:

(J)=1 (K)=2 (L)=3 (M)=0 (U)=4 (I)=5 (O)=6 (P)=* (:)= - 

For whatever it's worth.

For me, Fn+S turns scroll lock on/off, but it's an XPS13.