Originally Posted by Swamp Monster
What Relinquish said - Your speakers/sound card are receiving interference from other components in your PC, this causes "Scratching" sound when moving things around.
Specifically whining sound in your speakers are indeed interference from graphics card's power section. What I want to say is - by getting new graphics card you could get rid of whining , but probably not from "Scratching" noises
thats what happens to Integrated Sound Chips on the motherboard. Only solution to get rid of that noise is to get a Real Sound Card