NO SOUND ON PAVILLION dv9000, after upgrade

I have been working in my notebook for more than a month, i used manager device, recovery manager, add hardware, install, unistall. Nothing work for more than few hours, after that the sound go away. My notebook say NO AUDIO DEVICE ARE INSTALLED. I only have the software in the notebook. No disk support. I am tired to look for this.
Please somebody help me.
Thanks in advance
This question was solved.
View Solution.

Try installing the latest Conexant High-Definition Audio driver: http://ftp.hp.com/pub/softpaq/sp40001-40500/sp40170.exe
Also, make sure you've got the latest BIOS installed: http://ftp.hp.com/pub/softpaq/sp52001-52500/sp52477.exe
If you ever need to get back to your product's support page with all the drivers, you can get to it here: http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?os=2100&lc=en&cc=us&dlc=en&sw_lang=&product=3548...

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