It sounds like the on-board sound card is on its way out, sound cards are pretty cheap. You should be able to pick one up for less than a tenner, of course that depends on the quality of the sound card that you want.
Hands-on: Acer Predator Triton 700 review
1995-2015: How technology has changed the world in 20 years
This poetic animation about monsters is illustrated in a Van Gogh painterly style
Apple predictions 2017
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.