Upgraded operating system to windows 7 on hp pavilion a735w computer. lost audio to speakers

 upgraded  operating system to windows 7 32 bit on  hp pavilion a735w computer. lost audio to speakers, a driver was re-installed but there is still no audio.

Hi:
Try the windows 7 driver directly from Realtek:
Accept the agreement. Download and install the first one on the list.
http://www.realtek.com.tw/downloads/downloadsView.aspx?Langid=1&PNid=23&PFid=23&Level=4&Conn=3&DownT...
Paul

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