it does not happen very often, sometimes on-board audio simply fails and no longer works - quick fix may be to just get another sound card, can be cheap as $7 if all you need are 2-channel output that works.
it does not happen very often, sometimes on-board audio simply fails and no longer works - quick fix may be to just get another sound card, can be cheap as $7 if all you need are 2-channel output that works.