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Problem with audio after installing webcam...

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I'm currently using Windows XP SP2 with NVIDIA GeForce GT430. I'm using a TV as a monitor, connected via HDMI. Until yesterday I had headphones plugged into the actual TV and a microphone plugged into the mic jack. I installed a webcam (with mic) through the USB, then restarted the computer. When I restarted the computer I noticed that youtube videos lacked audio, so I tried to bug fix myself. I plugged the headphones into the front and back panels and jiggered around with the Realtek Audio Manager, but that didn't work. I tried having just the headphones and the webcam and just the headphones to no avail. I tried unplugging the headphones and using the TV speakers, but that didn't work either. I tried testing the headphones on my mp3 player and there was no issue, I tried with the headphones plugged into the back panel and they passed the dxdiag test, so I tried the Realtek 3D Audio Demo and that worked too, then I tried the Sound and Audio Device Hardware Test and that worked perfectly (well, when I used the standalone mic instead of the webcam one, it echoed). I also cleared my cache and cookies and whatnot to see if that were the problem, with no joy. I get the error "Rosetta Stone could not find a sound output device" also, so it's not just my browser.

Under sound playback if I try to select "Realtek HD Audio Output" it automatically switches back to "NVIDIA High Definition Audio". Anyone have any advice?

Finally, I tried going to Device Manager to check for new drivers, but my drivers were the most recent apparently.I've manually downloaded some drivers from NVIDIA to see if that will work. Any other recommendations? A friend said I may have to system restore, which'd be a pain.

Edit: I've since done a system restore and it still doesn't work (except through the Realtek audio test).

Edit2: It also no longer works in the dxdiag, only in Realtek audio test.

Edi3: It finally resolved: I switched from NVIDIA to Realtek and somehow it stuck this time, sound works fine.

Edited by gamerunknown, 05 December 2012 - 11:42 AM.

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Glad you got it sorted and thanks for sharing the solution so that it may help others :thumbsup:
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