HP Wireless keyboard will not connect in Ubuntu Studio, on HP Pavillion laptop

I’m using an HP wireless keyboard, but the system (Ubuntu Studio) on an HP Pavillion Entertainment PC (laptop) will not recognize or connect. Is there a particular driver that I need? Do I need to make a change in my system? I am a relative newbie on Linux, but have been using Mac and PCs for a long time (I remember 8" floppies).