Here's a link to procedure for modifying function keys: [URL]  Works for my Precision 7770 even tho the posting is for Inspiron system. Dell tells me that keyboards are different depending upon the region you live in. I still can't figure out why my Intel i9 laptop has a i7 sticker. 
I use my Precision to run my studio, among other things, and I need a quick way to PAUSE or NEXT audio/video streams. Both sales and 7770 technical documentation for the 7770 refer to PREVIOUS, NEXT and PLAY/PAUSE keys, but my 7770 keyboard doesn't have those keys. Is there a way to change or create a keyboard shortcut to function as PAUSE, PREVIOUS and NEXT? See attached pics/screenshots. Notice my keyboard doesn't have the PREVIOUS, NEXT or PLAY/PAUSE keys that I highlighted in red in the tech manual.  I'm wondering if maybe I got the wrong keyboard installed from the factory, since it has the Intel CORE i7 label, when my Precision clearly has a i9.[IMAGE]   [IMAGE]  [IMAGE]  
Keyboard PREVIOUS, NEXT and PLAY/PAUSE keys - Precision 7770