Buzzing from Audio Out

[Meriwether_R]

I am having trouble with buzzing coming from the front audio out jack on my case. This is no matter what kind of audio device is plugged into it. The back audio port, coming directly from the motherboard, is fine, but I'm wanting to have two sources hooked up at once. My peripherals, including the case, are listed below. Any suggestions on how to stop this?

Intel Core i5-3570K Ivy Bridge 3.4GHz (3.8GHz Turbo) LGA 1155 77W Quad-Core Desktop Processor Intel HD Graphics 4000 BX80637I53570K

ASUS P8Z77-V LK LGA 1155 Intel Z77 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard with UEFI BIOS

Rosewill HIVE Series HIVE-750 750W Continuous @40°C, 80 PLUS BRONZE Certified, Modular Design, Single +12V Rail, ATX12V v2.31/EPS12V v2.92, SLI Ready, CrossFire Ready, Active-PFC Power Supply

G.SKILL Ares Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-1600C9D-8GAB

XFX Double D HD-687A-ZDFC Radeon HD 6870 1GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card with Eyefinity

Rosewill CHALLENGER-U3 Black Gaming ATX Mid Tower Computer Case ,comes with Three Fans-1x Front Blue LED 120mm Fan, 1x Top 140mm

 

[makkem]

Hi
This is normally caused by a poorly shielded cable from the front panel to the motherboard picking up EMI from the motherboard and the graphics card.
Try rerouting the cable away from the graphics card or move the graphics card to another slot.
Ensure your computer is plugged in to a grounded outlet.
You could try wrapping the cable in aluminum foil and connecting this to ground via a bare metal part of the case.You should cover the foil with shrinkwrap of insulating tape.

 

[Meriwether_R]

You should cover the foil with shrinkwrap of insulating tape.

Thanks! Did you mean "shrinkwrap OR insulating tape"?