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Have windows sound but no sound with videos

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Previously, i had no sound problems with my notebook (EVER). I was able to watch movies/videos without problems.... hooked it up to my tv and streamed movies from netflix. One night i fell asleep with a netflix movie on and when i woke up my notebook was in hibernation. When i brought it out of hibernation my sound was all screwed up. I have sound as far as windows start up and when i go to the windows help page i can play and listen to the videos on the website. However, sites such as Netflix or YouTube give me no sound. Adobe presenter of audio-visual lectures plays video but no sound as well.

In my device drivers i have "high definition audio device" listed twice which i thought was strange. I've right clicked on them both and tried to update but the message comes back saying there are no updates available. When i right click on the sound icon in the bottom right of my screen and click on playback devices it says Digital Output Device (HDMI) working and it's set as default. If i hit "test" green lights move up and down to the right of it but i hear nothing. If i enable my computer speakers as default and hit "test" i see the green lights but also hear chimes. I have no idea why some of my sound went away and where it went to! Someone told me my sound card could be bad but if that was the case wouldn't i have no sound at all? Any advice would be greatly appreciated.
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    Certified monkey.

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First open your device Manager and uninstall your audio driver and reboot.
Type devmgmt.msc in your run box this will open device manager find your audio device right click it then uninstall. Reboot your machine. (yes both of them,and no this will not render your machine soundless)

Try this program to get an update for your audio driver.
You need to register the program in the link above and you get two free drivers in a 24 hour period.

Also take a look at the links below.



Please post the log created by the program in the link below,if the above deosnt help.

Hit start button at lower left hand corner of the screen.Then in the run box type services.msc. Look for windows audio/anything to do with audio and make sure the startup type is set to automatic. To do this,right click selected service select properties then change the startup type to automatic then left click apply.You will need to reboot your machine for the changes to take effect.

If all of the above fails then try a system restore to a point when it was working.

Edited by rockmilk, 25 March 2012 - 02:05 PM.

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