Annoying noise from headphones

[sir Oliver]

There's high pitched noise coming from my headphones plugged to my computer (never used speakers). Sounds like almost constant "piiiiiiiiii" or "weeeeeeeeee". The noise is the same regardless of headphones being front or back panel connected. Between boot and opening a browser, when there's just the desktop on my monitor, this sound is not present, only some crackling which reacts to mouse movement. The buzz appears few moments after a browsing session is started and won't go away if I minimize the window to show the desktop again or even if I close the browser. It attenuates a bit when I choose line out in the audio i/o menu instead of headphones. It does not react to volume control. I have muted mic. and everything - still there. Any help?

 

[505090]

Interference somewhere, first thing try a different pair of headphones.

 

[sir Oliver]

Don't have any extra to try, I can borrow of course, but these I have are high quality Sony dj headphones mdrv700 and I don't think there's something wrong with them.

 

[daship]

See if you bios will let you enable spread spectrum.

 

[sir Oliver]

What's that? I didn't find anything such in the BIOS.

 

[505090]

should be in advanced features or some such, most mb's have it