Massive Audio Interference

[KrylixZA]

So here's my problem:

I recently did a full upgrade of my computer - components and a few peripherals - and now I'm suffering from an extremely large amount of Audio Interference.

PC Specs:
MSI 970A-G46
AMD FX 8120 (3.1GHz x 8 Cores)
8GB DDR3 1866MHz (Corsair Vengeance)
Gigabyte 7870 2GB OC Editions
2.5TB Hard drive Space

Peripherals:
Razer DeathAdder (Mouse)
Razer DeathStalker (Keyboard)
Roccat Kave 5.1 (Headset)

Since I bought my keyboard I've heard a constant buzzing noise in my headset - it turns out that my keyboard seems to be causing a lot of interference. I moved the USB cable for my keyboard to a USB port on the opposite side of my case and that solved that problem but now I am experience this buzzing noise, however this time less extreme, during gaming and whenever I move my mouse around.

I've tried moving my GPU away from the on-board sound card (to the 2nd PCI-E port). This yielded no positive results. I've also tried a PCI USB Extension Card. This also yielded no positive results.
My assumption is that the interference is not only external (keyboard) but also internal (motherboard) as I'm hearing the noise with mouse movements.

I'm wondering if buying a new sound card would solve the problem (Current sound card is using the latest Realtek Audio Drivers).

I'm new to Tom's Hardware so please don't bash me if my post is in the wrong forum topic.

 

[bucknutty]

Sounds like the USB ports are not grounded correctly. Are you using the metal IO shield on the back of the board? Are you using upfront USB ports and Head phone ports?
Is the mother board mounted on brass standoffs, or did you use paper or plastic washers.

If you have upfront usb and audio ports on the case I would unplug those and then test with out them.

 

[gopher1369]

It's possibly a ground loop. I had the same problem connecting a laptop to an external amplifier - a constant buzzing noise. I absolutely cannot guarantee that's the same problem you are having, but it's possible.

http://en.wikipedia.org/wiki/Ground_loop_%28electricity%29

and my fix:

http://compare.ebay.co.uk/like/170602063703?var=lv&ltyp=AllFixedPriceItemTypes&var=sbar&_lwgsi=y&cbt=y&device=c&adtype=pla&crdt=0&ff3=1&ff11=ICEP3.0.0&ff12=67&ff13=80&ff14=63&ff19=0

 

[KrylixZA]

It's possibly a ground loop. I had the same problem connecting a laptop to an external amplifier - a constant buzzing noise. I absolutely cannot guarantee that's the same problem you are having, but it's possible.

http://en.wikipedia.org/wiki/Ground_loop_%28electricity%29

and my fix:

http://compare.ebay.co.uk/like/170602063703?var=lv&ltyp=AllFixedPriceItemTypes&var=sbar&_lwgsi=y&cbt=y&device=c&adtype=pla&crdt=0&ff3=1&ff11=ICEP3.0.0&ff12=67&ff13=80&ff14=63&ff19=0

This may work but I need a Group Loop found locally in South Africa (Otherwise shipping will be more expensive than the product) and I need one for a PC not a Laptop

 

[KrylixZA]

Sounds like the USB ports are not grounded correctly. Are you using the metal IO shield on the back of the board? Are you using upfront USB ports and Head phone ports?
Is the mother board mounted on brass standoffs, or did you use paper or plastic washers.

If you have upfront usb and audio ports on the case I would unplug those and then test with out them.

* Yes I am using a metal IO shield
* I'm using 1 upfront USB cable for my keyboard as it's the only place that I can find to plug my keyboard in where it won't create a constant interference with my headset leaving me with a constant, mosquito-like noise. (By plugging it in the front I now only get that noise whenever I move my mouse or am in-game on Battlefield 3).
* My motherboard is mounted on brass standoffs.

EDIT: I unplugged the cables connecting my front USB and Audio ports to my motherboard and it seems to be working much better now! Thanks!

 

[bucknutty]

Checkout how the ports attach to the case. What you want to do if possible is to add a ground wire (piece of scrap wire) one end touchs the outside metal of the USB port and the other end touches the metal of the case. This way the USB ports are grounded to the metal case.

Plug the wires back into the internal headers on the mobo and see if it helps.