Onboard Sound Issues

Hi,
I'm having some trouble with my onboard sound and I am hoping someone can help me.
I have a Gigabyte motherboard (GA7N400-L) which I bought about 8 months ago.
The right hand speaker has started to get really bad static interference.  The left hand speaker is fine.
I tested that it wasn't the speakers by plugging in my headphones, which get the exact same problem.
The speakers when plugged into the CDin do fine.
The static is mostly constant and quite strong, and sometimes seems to have regular beats in it.
Whenever I roll my mouse wheel I get very strong squeaking interference from the speaker.
Does anyone have any idea why this is happening?
Thanks very much

Vandervecken

Vandervecken....I assume this is something that just started ........Have you updated any drivers recently? Have you checked the small cable which runs from the cd drive to either the motherboard or your sound card ?

let us know ......

dl65  

I reinstalled the latest nForce 2 sound drivers today and the hum disappeared.  By evening it was back.
The cable from the Mobo to the CD is fine.  The distortion comes regardless of whether the hard drive or the CD is playing, but the direct CD line didn't have this problem.

[R.I.P.]

Vandervecken.....Is it possible to try your sound card in another P/C.........if the sound is ok then your card is ok if not the card may be breaking down.
Let us know.

dl65  

Unfortunately its onboard sound...

[R.I.P.]

Vandervecken....oops you did say sound was onboard....
ok ...then do you have a pci sound card you could plug in .....then disable the onboard sound and see if the problems still there ?  Maybe borrow one from a friend .

dl65