Please, clearly, describe your hardware setup. Initially you only indicated an issue with a USB headset (what make/model?).
Motherboard MSI 990FX-GD80, using drivers from MSI LiveUpdate
Old 5.1 Konig CMP-HEADSET29 There are no new drivers, I'm using the XP drivers because the Vista one doesn't work.
using 3 3,5mm jacks into my reciever...