Desktop hungup with sound bar

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http://ubuntuforums.org – This morning I turned on my laptop and discoverd that the sound bar appeared in the upper right corner and was appearing and disappearing at a rate so fast that my mouse was useless. I can't make the sound bar stop appearing. I have no media playing. Never have. I have the latest version of Ubuntu installed and up to date. Before I try to reinstall, is there anything I can do? (Hardware)