Thanks for the feedback, AXOX. Good to hear it helped.

I did some more reading and found this.
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When you open the Realtek HD Audio Manager (double-click the orange speaker in the tray),
there is a small folder-like icon in the top-right area...

Yes, but he said he had sound coming from it before.

I had one other idea that might be easier. Hit the Windows key, type in "sound" to bring up the Control panel and rightclick on the Realtek and set it as default. You can disable the other Nvidia...

BigJack,

I just saw this before I was shutting down for the night and gave it some thought. I'm not sure how much you know about this, so forgive me if some of this is obvious.

Having several...