There are no warnings for the Audio devices, but there are warnings under "Other devices":
- Base System Device
- Base System Device
- Unknown Device
- Video Controller (VGA Compatible)

I tried going to that link that you sent but when I clicked on High Definition Audio Codecs (Software) and AC'97 Audio Codecs (Software), it brings me to http://152.104.125.41/ (their homepage, I'm guessing, if it doesn't load for you)

Is this normal? And if so, where can I find the driver I need? Thanks.