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When I originally purchased the laptop I had no sound issues when I had XPSP1 or XPSP2. Problems started when I installed Vista and are continuing with XPSP3.I have unsuccessfully tried updating the driver via the following sources:My current thought is that this issue is related to the Microsoft Universal Audio Architecture (UAA) Bus Driver for High Definition Audio and is applicable to most XPSP3 systems. I have tried unsuccessfully to update the driver using multiple sources. The driver vesion can be found within your local Device Manager under System Devices (mine is dated 3/5/04 ver: 5.10.0.5010)If I could get the updated (Microsoft Universal Audio Architecture (UAA) Bus Driver for High Definition Audio driver installed I am hopeful that the issue would go away. What a pain!Is there a MSFT patch issued that I am missing?I have an HP Pavillion dv6140US laptop which has been problematic since day 1 regarding sound. This week I reverted back to XPPro from Vista, which included installing XPSP3.Microsoft uaa bus driver for high definition audio service pack 3.