Hey Tech People: New to the boards, and I plan on becoming a regular, so let's start off with this question, since I can't figure out what the heck is wrong. Basically, I just installed a new mobo (Asus K8N-E Deluxe), new CPU (Athlon 64 3400+), and new graphics card (Geforce 6800 GT). Suffice, pretty good upgrades and everything is working pretty well. However, one thing: my headphones, when plugged into my Logitech 5.1 speaker setup (the separate volume control thing), give me a nice buzz sound, sort of like feedback. It fades as I move away from my computer, and gets louder when I touch the mouse and move near more electronic equipment. I tried plugging the speakers into different outlets and things like that, but nothing. The only way to get the buzz to stop is to actually turn off the speakers from the woofer. Just turning them off at the control knob does nothing. I am lost. The speakers work fine when the headphones are not installed, and the headphones work in other things, such as my TV/Xbox pairing. No buzz there. Any advice? Is my mobo grounded properly, and if not, how do I fix? Thanks!