4X Nvidia High Definition Audio in Device Manager but only one GTX570 installed | TechPowerUp Forums
![After updating the display drivers for my GeForce or Quadro GPU, I have lost audio coming out of PC. | NVIDIA After updating the display drivers for my GeForce or Quadro GPU, I have lost audio coming out of PC. | NVIDIA](http://nvidia.custhelp.com/rnt/rnw/img/enduser/aid_4286_02.png)
After updating the display drivers for my GeForce or Quadro GPU, I have lost audio coming out of PC. | NVIDIA
![Every time I use Moonlight, PC audio playback is stuck with Nvidia HDMI OUT as default · Issue #199 · moonlight-stream/moonlight-qt · GitHub Every time I use Moonlight, PC audio playback is stuck with Nvidia HDMI OUT as default · Issue #199 · moonlight-stream/moonlight-qt · GitHub](https://user-images.githubusercontent.com/12472021/54862634-f1ebf180-4d13-11e9-9cec-3acfb7bd70b2.png)
Every time I use Moonlight, PC audio playback is stuck with Nvidia HDMI OUT as default · Issue #199 · moonlight-stream/moonlight-qt · GitHub
![Nvidia High Definition Audio 27.21.14.5509 with Dolby Home Theatre V4 enabled | Page 2 | guru3D Forums Nvidia High Definition Audio 27.21.14.5509 with Dolby Home Theatre V4 enabled | Page 2 | guru3D Forums](https://i.imgur.com/oVvMfwi.png)