Hi,
Try this link again:
http://www.amd.com/us-en/Processors/..._13118,00.html
Install the 2nd! one from the bottom if you have not done so.
Are there any errors in the device manager?
As far as the audio, I have researched this (a little). This is one of the bugs when you downgrade. Try this, when you hookup the Headphones, MUTE the speakers and see if you get sound from the headphones only.
I am not sure that this will work, but as I said it is one bug you may have to deal with. From my research this is a common problem.
I want to Thank You for your patients and staying with us to resolve this issue. You are more patient than most.
The important thing is, has our hard work made you Happy. If so and the only problem you have is the speaker issue, I will POST all the correct drivers for this model for others to use at the end of this thread.
Let us know!
Thank You,
Bill