I was redirected to this thread for my audio problems. I don't fully understand this forum despite being a web developer. I thought my profile included the build details that were requested.
I couldn't find "HD Audio" in my Gigabyte BIOS, but I did enable what looks like onboard audio. I'm at the point now where I have audio output devices showing up and my volume control appears to work, but nothing that contains audio will play. Vimeo and YouTube won't play videos. VLC won't start playing a file. I know this problem has a name. Can you point me to the next step?