Hello! I have very annoying problem and I hope that you will know what is about because it seems that none knows. I can hear some strange noise from my speakers and headphones. This noise reminds me on working hardware inside the computer case. Call me paranoid, but I think that something is going on with my sound card.
Hello! I do not think that you are paranoid, but that you really have some problems with sound card. I think that you should try first to set properly volume controls. If that does not help, then you have problem with filters on the soundcard supply voltage and you will need to buy new one.