My antec 900 did this and switching to a different case with the same everything else solved it. So it could be your case panel wiring.
Have you tried using your rear audio out? Should be the green colored plug IIRC.
I have. It’s outside sitting on a mobo box lol. It’s directly connected to the rear panel
I've only seen this on Linux. Over there, I could always fix it by disabling powersaving settings that the audio driver has. By default that driver tries to put the hardware to sleep when there's no audio playing, and then there's a pop/crackle every time you start playing audio.
I've never heard about this kind of problem on Windows, I'm not sure if there's even weird settings like what I've seen in the Linux driver because it should just work fine.
That’s what i’ve seen from my searches but i’ve tried changing all the power settings even on regedit without luck.
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