Sound hardware issue?

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http://forums.fedoraforum.org – *running fedora 17, latest grub* It was working just fine a couple days ago. The thing I was messing around in was the "sound" options. I was choosing different hardware settings, like duplex speakers, audio line in speakers, etc. and I chose the wrong one apparently. My sound button on the top of my screen is no longer there, and everything is grayed out when I go to the settings manually. I was wondering if any of you smart cookies could solve my problem, I researched till my brain farted. (HowTos)