Strange distortion

Alkaline

Geek Trainee
A couple of weeks ago I bought a new PC (see specs below) and installed my PCI audio card. On my former PC this card worked fine, but on my new system I am getting very soft ‘distortion’ on playback of audio and when sliding volume (eg thru iTunes or Windows Media Player). I have absolutely no idea what could cause this problem. Any idea?
 
Could it not be the sound you are playing, as you mentioned it only happens with certain sounds/parts of the track? Ask a friend to play the track/sound, see if they notice any distoration.

Are you able to try different speakers?
 
Could it not be the sound you are playing, as you mentioned it only happens with certain sounds/parts of the track? Ask a friend to play the track/sound, see if they notice any distoration.

Are you able to try different speakers?

Thanks.

It has nothing to do with the source sound. It does not make a difference which music I play; if I slide the volume control, there is crackle.

Even when the audio is coming from an external cd-player through line in, there is the same crackle when sliding the volume control of the audio card.

I also tried a different speaker set and head phone. No difference.
 
Is the power cable for the speakers connected to a surge-protected socket? try the main power socket, as I've read surge protection can cause problems.
 
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