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Whining sound coming from speakers+headphones

Last response: in Components
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February 20, 2013 7:57:01 PM

Okay, so here's the history...

The other night, I came home to a high pitch noise coming from my turtle beach headphones. Upon removing the headphones from my computer, I the sound started coming from my speakers. I then shut off my computer. I removed everything except the power cord. I could hear a different, yet similar whine. Upon opening my computer, I heard the noise coming from within. I then took out the video card, and started the beast back up. Same thing... After hours of browsing forums on my phone, I decided it was either my CPU or PSU. I then removed the PSU and jump started it to check whether or not it was making the noise. It ran fine and made no noise. However, upon connecting it to the motherboard and starting it, I then heard the noise again. When i listened closely to the CPU, I heard nothing, then I listened to the PSU which was outside of my case this time, and I could hear not only the high pitched whine, but also a slight... crackling noise...

It was then that I jumped on newegg and ordered a new PSU http://www.newegg.com/Product/Product.aspx?Item=N82E168... . After 1 long, unbearable night and into the morning, the PSU was here, and I spent 3 hours carefully setting it up, and organizing the cords in and around my computer.

NOW THE GOOD STUFF...

Upon turning on my computer, everything seemed fine. I quickly jumped on youtube and started a video.. no sound coming from my headphones...
I then pulled out my headphones from the jack... No sound coming from my speakers.
It was then I realized I could hear the ever so dim whine coming from my speakers....
As far as I can tell, there is no noise coming from my new PSU.
I can hear the sound JUST fine when i plug in my samson go mic, and plug my headphones into THAT microphone (yeah i know it sounds weird but think of it as a little mini external sound card or something)

When i play youtube videos with my speakers plugged in, I have to crank the volume up on both the speakers and the computer and even then it's super quiet. When i play videos with my headphones plugged in (in the front of the computer) it makes no noise until the volume is around 90%+, but the sound is just a crackly distorted version of whatever i have playing.

I have never had an issue with my computer so far, so i'm honestly not too sure what's going on...

Here are my computer specs

Intel i7-2600k CPU @ 3.40GHz
32.0 GB DDR3 2133 RAM
64-bit Windows Ultimate
Fatal1ty Z68 Professional Gen3 (http://www.asrock.com/mb/overview.asp?Model=Fatal1ty%20...)
Updated BIOS
NVIDIA GeForce GTX 480
256GB OCZ Vector SSD (with OS installed on it)
1TB WD Drive
3TB External WD Drive
COOLER MASTER HAF X (http://www.newegg.com/Product/Product.aspx?Item=N82E168...) - Not that it really matters...

Here's my 64-bit DxDiag... http://pastebin.com/sF0B5rrJ

So yeah... aside from knowing my motherboard is failing... what can you tell me to convince me otherwise? lol I refuse to believe that it could be my motherboard because well.. its been a good board thus far and I haven't seen anything like this when searching google... so I feel like it can't be so isolated :/ 
February 20, 2013 10:33:06 PM

Also, it seems it starts when windows starts up.. could it be software?
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