Question about HP Pavilion dv6704nr Notebook

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I have no sound it says no audio output device installed this all happened yesterday after a windows update

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If you have restore turned on your system should have made a restore point before installing the update. Try and roll it back to before the install, Go to accessories, system tools, system restore. It should show the install of the update that created the problem, restore it to that point. check and see what the update was for and if you need it, if not block it from updating that one again on the update page.

Posted on Sep 25, 2009

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Go to control panel, open add remove software, then uninstall the updates you have installed yesterday which you think caused the problem. restart

Posted on Sep 25, 2009

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Try doing a check in the device manager for flags.
Remove any flags and remove any external devices.
Reboot the unit in safe mode and see if you get the same error messages.
If so, you can remove your sound and modem drivers in the device manager and reload from restoration disks or partation. Or you can allow windows to reload the drivers after a reboot.
If you are useing VISTA the best way is to type in recovery manager, and choose re-install hardware but you should have removed the audio and modem drivers first.
Hope this helps, Please readers rate your techs.

Posted on Sep 25, 2009

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might need to go in a do a system restore to a point before the upgarade

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I have installed Windows 7 on my Hp 6602au. It worked fine for a couple of months , till yesterday . Suddenly I lost audio from my laptop. The message near audio icon showed "No Audion Output Device...


Run a Windows Update, check to see if there is an updated audio driver, if not go into the device manager and remove all of the audio devices, reboot.

That should resolve your issue.

Let me know if it doesn't ;)

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set back to last week ,
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Also, check Windows Update to see if a sound driver is offered as an optional update.

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