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What is this and why did it suddenly stop working on my computer (even after I reinstalled Windows!)?I'm running Windows XP x64. My sound card is built-in Realtek ALC882. I was listening to music all day on my comp and suddenly between songs it "broke." The system tray icon for my soundcard disappeared and Media Player said "Cannot play the file because you have no audio hardware." Looked in Device Manager and under System Devices this UAA Bus Driver was ticked. I couldn't find any help on Google. I reinstalled Windows and still the exact problem came up right away! Am I gonna have to buy a new sound card or what?