It sounds like the problem is in your sound card software it does not map properly or it conflicts with premiere. Try to reinstall that.
If I switch from the creative Asio driver in Premiere to the Premiere default sound none of these problems occur.
Maybe that is the reason most use on-board sound, instead of Creative cards, because those cards seriously hinder your creativity.
I had to install a Creative card because the onboard HD sound on my Asus P6T Deluxe motherboard would not allow me to map 5.1 channels in premiere since it did not support Asio. I tried using an Asio program in the background that was recommended as a workaround but it was problematic.
Is it possible that my System Restore didn't fully roll back the drivers and that the updates are still the cause of the problem? I didn't try a complete uninstall/reinstall because I assumed the System Restore was rolling back the drivers.
Creative has no phone number to call only a tech support email form. What's weird is that I now notice that I can't seem to mute the microphone at all and had to unplug it.
Were you able to map 5.1 channels with the onboard sound? If so, how did you do it? The 5.1 channel icons only showed up for me after installing the Creative card. When I did some Google research it seemed like it was not possible.
I also noticed that the sound is much lower with the Premiere Pro WDM sound.
Does anyone know if it's more stable using Premiere WDM sound or less reosurce intensive?
Were you able to map 5.1 channels with the onboard sound?
Unfortunately, I do not have such speakers or media to test with. As an editor, I'm still stuck in stereo land.