I have a new HP Envy 17-j1070ez where I cannot get the microphone to work. I loaded successful Windows 8.1 64-bit onto and used HP Support Assistant to install all available updates.
The sound is somehow working , I hear the sound when changing the loudness. However the sound control panel has "no devices installed".
The following driver for audio is reported in the support assistant: IDT Audio - IDT - 1.0.6491.0