Re Ac'97
I also have this onboard soundcard and was able to have it detected as usual no problem. Check your bios.
Re Video 'Broken'
Dunno if same prob, but this was first time knoppix didn't detect my refresh rate properly so screen was black/white choppy. Press f2 in boot you will see knoppix xrefresh=60 or somesuch. Check it out.
