Hi oviemad,
Welcome to the HPCommunity, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I see that you are having some issues with your headphones. It does sound like a hardware issue with the headphone jack if this happens with multiple sets of headphones. You try reinstalling your IDT High Definition Audio driver. If that doesn't work then I would recommend calling HP Total Care at 1-800-474-6836 in North America or visit this link if you are outside of North America.
Thank you,