I tried yesterday , I am using Window 7 now, yes, I can find a k

in control panel, but this key wasn't allowed me to click ( 不突出讓你按),
I think maybe I need to re-install Window- 7. this is my last chance.
If it still doesn't work, Can I buy a Amazon USB sound card to try? I think this sound card doesn't need Window software to support, right?
thanks!