Bose quietcomfort 35 (series II) headphones. My case is iCUE 220T mid case. It only happens on my front pc case audio out. It seems to only happen when i've been using my headphones on another device like a tablet or phone.Make and model of your headphones? What case are you working with? Does the issue crop up when using the rear outputs on your motherboard's audio? If the headset you have is analog and relies on the audio ports(and not USB) then you could try uninstalling and reinstalling your audio drivers with the latest found off manufacturer's support site.