Electric Noise / Microphone static

[diiPex]

My microphone/computer is producing a strange electronic noise/static and I can't seem to find a solution, so I've come to you guys for help. 

 

When plugged in via 3.5mm jack I get a very loud electronic noise that reacts to computer activity such as mouse movement. This noise percists regardless of if the microphone is muted or even unplugged, so I believe the problem to be computer related not microphone related.

Example: http://clyp.it/yenek103

 

When plugged into an external sound card I still get excessive static/noise, however it doesn't seem to react to computer activity. 

Example 1, Astro Mixamp: http://clyp.it/2uxxb4uo

Example 2, SteelSeries USB Sound Card: http://clyp.it/4mojkyg0 (Note: this card seemed to react to being touched [0:06])

 

I've tried different headsets, different outlets, with and without power bricks, every computer setting imaginable and even different houses! however the problem percists...

 

Relevant PC Specs: 

Motherboard: MSI Z77A-GD65

Power Supply: OCZ ZT Series 750W

Headset: Senhieser pc360

I'm currently using my headset through the Astro mixamp since the static is most bearable. 

 

Would a dedicated PCIe sound card solve my problem? If so, which would you reccomend?

 

Any help at all would be greatly appreciated! I've been dealing with this issue for over a year and really want to get this sorted out. If you need any more info don't be affraid to ask. Thanks for reading.

[NannerBeans]

Try different USB ports and if that doesn't help then grab a syba dac/amp and that should fix it.

[ShearMe]

You're not having the same problem across devices, you're having multiple occurrences of similar issues across different devices.

 

The first one is either bad case grounding, or just a junky motherboard in general. Second is just louder than average backgroundg static, and third is another junky solution.

[diiPex]

Try different USB ports and if that doesn't help then grab a syba dac/amp and that should fix it.

I've tried multiple USB ports (front and back) but all had the same problem. I'll look into the syba dac/amp, but since they're connected by USB wouldn't I have the same problem? Thanks for the advice

 

You're not having the same problem across devices, you're having multiple occurrences of similar issues across different devices.

 

The first one is either bad case grounding, or just a junky motherboard in general. Second is just louder than average backgroundg static, and third is another junky solution.

I can see how they each sound different, but thought that maybe they were all caused by the same rout problem such as a faulty power supply or motherboard. Both my external sound cards produce a clear signal on other computers, so I don't believe they are the problem. Thank you for the help

[ShearMe]

Both my external sound cards produce a clear signal on other computers, so I don't believe they are the problem. 

 

Well then maybe you are right. I assumed different house meant different computers.  :unsure:

 

Faulty PSU, mobo or simply bad case grounding would cause things like this.

[NannerBeans]

I've tried multiple USB ports (front and back) but all had the same problem. I'll look into the syba dac/amp, but since they're connected by USB wouldn't I have the same problem? Thanks for the advice

 

I can see how they each sound different, but thought that maybe they were all caused by the same rout problem such as a faulty power supply or motherboard. Both my external sound cards produce a clear signal on other computers, so I don't believe they are the problem. Thank you for the help

Oh if the sound cards sound fine on other computers I would guess that it might be your mobo's fault. But the other things ShearMe said might be it too.

[diiPex]

Well then maybe you are right. I assumed different house meant different computers.  :unsure:

 

Faulty PSU, mobo or simply bad case grounding would cause things like this.

I see. So does this mean the best solution is to try replacing the motherboard and PSU, and how would I go about fixing "bad case grounding"? Do you think a dedicated sound card would resolve these issues? I would rather not go through the hassle of replacing the PSU and motherboard if it can be avoided. Once again, thanks for the help.