Unity Blocks Google Chrome Sound

When Unity is opened, Youtube Video will have no sound. Am I the only one who get this issue ? This become a problem when I watch the unity tutorial, I can’t have Unity opened. Does anyone know how to fix this?

Edit: When I click “Test” button on Speaker Properties, an error message “Failed to play test tone” shows. In Unity console, it shows errors:

1.FMOD failed to initialize … A call to a standard soundcard driver failed, which could possibly mean a bug in the driver or resources were missing or exhausted.

2.result == FMOD_OK

3.An invalid object handle was used.

Try changing exclusive mode options.