Can you tell us what your machine is and also what sound card is in it?
If a Dell machine, there are past threads on the forum concerning "dummy output", including: Dell Precision 5750 - No sound ( Dummy Output )
Can you tell us what your machine is and also what sound card is in it?
If a Dell machine, there are past threads on the forum concerning "dummy output", including: Dell Precision 5750 - No sound ( Dummy Output )