4X Nvidia High Definition Audio in Device Manager but only one GTX570 installed | TechPowerUp Forums
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Stuttering/scratchy/screeching audio. High Definition Audio Device/Realtek Audio Drivers, Acer SA230 Monitor, NVidia Digital Audio Drivers; what do I do to get standard, decent-quality headphone audio? : r/24hoursupport
![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
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Nvidia High Definition Audio 27.21.14.5509 with Dolby Home Theatre V4 enabled | Page 2 | guru3D Forums
![NVIDIA High Definition Audio issue. Onboard sound card disappeared from windows! | Tom's Hardware Forum NVIDIA High Definition Audio issue. Onboard sound card disappeared from windows! | Tom's Hardware Forum](https://i.imgur.com/IuGgHnm.png)