My speakers have a constant hissing coming from them but when I right click on the speaker icon in the task bar then click on playback devices then click on speakers and open the advanced tab and then click on the test button the hissing stops until I switch off and re-boot again. Any suggestions?
I used to have a similar issue, they would hiss until I knocked the desk. Turned out to be the lead. Could be an earthing issue. Try swapping the lead.
