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Has any one got a solution to this problem. I have installed windows 7 pro and installed audio (coexant) latest driver from the lenovo web site but it still does not work. I have seen many similar posts but no solution - just the usual - do you have the most recent driver.... etc. Is there any one that has solved this problem out there? (Driver details: Audio Driver 2.57 MB Normal Version 4.98.5.50)

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A random thing to try: Fool around with BIOS settings that involve your audio device. I doubt that'll help, but hey, it's something you can try. –  Doc Jun 29 '11 at 15:50
    
Don't know about the technical part, but you get your sound back when you sleep your laptop and then log in. It works in all Lenovos. Until now a solution for getting back sound permanently in not given. –  user89286 Jul 7 '11 at 12:42
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I have seen this on a Lenovo T61. The HD audio driver is required as well as the sound card driver itself. Did you install the HD driver? Have you installed the Levovo Thinkvantage system tools? ThinkVantage System Tools

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