Hi Jack1938,
Thank you for joining the HP Forums! I will be happy to assist you but I will need some additional information. What exactly are looking for; where in the computer the sound card is located or are you looking for the sound card driver? I will also need your operating system and your product number?
Find your product number on a notebook:
http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&dlc=en&docname=c00033108
Finding your OS:
http://windows.microsoft.com/en-CA/windows/which-operating-system
Thank you,