Amazingly enough, though there are some 50,000 folks looking for this answer, I have found how to fix Sigmatel, and purely by accident.
Do this: Go to C:\Program Files\SigmaTel\C-Major Audio\WDM
and double click on suhlp.exe (32 bit systems). This will install the Sigmatel High Definition Audio BUS. From that point on, you will not have any more problems with Sigmatel's famous Code 10 problem.
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