*New Build* Buzzing Through Both Audio Jacks

[Cale Salad]

Hello fellow tech enthusiasts! I finished my first PC build and am having an issue with audio...

 

There is an obnoxious buzzing noise coming from both front and rear IO 3.5mm audio jacks, evident when listening with earbuds or my battery powered JBL Flip 4 connected via 3.5mm aux cable. It really ramps up when playing games. I think it might be there when not running games too as well, it's just quiet. Its presence seems to be directly correlated to the presence of my GPU's coil whine (they both intensify at the same time booting up and exiting games). The noise is affected by scrolling up and down with my mouse. I would appreciate any insight on this! I will buy a different mobo, psu, and maybe case if I can't figure it out.

 

I've researched a total for more than 5 hrs on what this could be, but haven't found any issues that fit my situation exactly...

 

Things I think IT COULD BE:

 

Coil whine (although from what I've learned coil whine doesn't come through the audio jacks too?)

EMI + badly shielded onboard audio chip (I'm using the lower PCIe slot right next to the audio chip)

My PSU

Improper grounding (issue w/ case?)

 

THINGS I'VE TRIED w/ no success:

*updating BIOS then uninstalling and reinstalling drivers (audio & LAN)

*using a HumX (that seemed to decrease it, but the noise was still was present)

*unplugging all fans to ensure it wasn't vibration from them

*pulling front IO audio cable away from power cable to MOBO and away from PSU

*enabling the onboard HD Audio via BIOS

*unplugging my peripherals and wireless Bluetooth and WIFI antennas

*muting both audio outputs (noise still present)

*changing bit rate and Mhz of audio output in windows

 

MY BUILD:

Windows 10 Pro

 

CPU: Ryzen 9 5900x

GPU: EVGA GTX 1080

MOBO: MSI x570 MAG Tomahawk WIFI

PSU: Seasonic FOCUS GM-850

RAM: Crucial Ballistix 3200 MHz DDR4

 

Boot Drive - KC3000 PCIe 4.0 NVMe M.2 SSD

Storage Drive - SAMSUNG 970 EVO Plus SSD 2TB - M.2 NVMe

 

CPU Cooler: Noctua NH-D15 chromax

CASE: Corsair 5000D

FANS: Noctua NF-S12B redux

 

[Skiiwee29]

This is actually called a Grounding Loop. You will need to get yourself a grounding Loop Isolator that should solve your troubles.