Hi!!! I'm not being flippant... A lot of files-were damaged by SP1. It may help to re-download missing or damaged files. Like Rhapsody for example. There are a couple of articles from HP that may help a little: "HP Notebook PCs- Resolving Sound Problems when Unplugging a USB" and "HP and Compaq Desktop PCs- Resolving Sound Problems in Windows Vista" Sincerely, Celestra

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Celestra