ASRock onboard audio hardware not detected

Got used computer from friend, cannot install new hardware in windows device manager. I am trying to install ALC662 which is the onboard audio hardware.

• Onboard HD Audio is set to enabled in BIOS

• device manager - add legacy hardware - no new hardware detected

• device manager - no audio device visible at all

• dxdiag shows no audio devices installed

• old driver (after making invisible device visible)
  

This is the mainboard ASRock N68-GS4/USB3 FX (Rev 1.0) BIOS v1.10
https://www.asrock.com/mb/NVIDIA/N68-GS4USB3%20FX

also tried linux - no audio hardware available. anyone can confirm this is hardware failure?

• dmesg

• lshw

• lspci

• lsusb
  Note: 0bda:8153 Realtek is external usb ethernet. on-board eth also not working (forcedeth no link although hardware works in windows)

• mcelog not available (even after modprobe edac_mce_amd)

  mcelog: ERROR: AMD Processor family 21: mcelog does not support this processor.
  

This is first time I get Windows 10 in my hands, it was installed already on this PC and I don't know how this was done. I cannot find any chipset drivers for this mainboard* although in device manager everything looks installed fine.
*just installed SMU-Driver NVIDIA all in 1 driver v15.37 for Windows 7

Side note: ATI Radeon 5850 PCIe graphics card only black screen and not visible in device manager, maybe graphics card is broken now (it worked up to the removal from previous computer). I got onboard graphic working with 309.08 whql drivers, so just mention that because it may related to audio issue.

Solution 1:

• pg43 manual notes:

Onboard HD Audio Select [Auto], [Enabled] or [Disabled] for the onboard HD Audio feature. If you select [Auto], the onboard HD Audio will be disabled when PCI Sound Card is plugged

• Someone also mentioned no audio after installing new GFX card
  • I assume there is no graphics card installed per your notes. However you note an ATI one was possibly used, if you ever got it working the drivers could still be installed causing the above condition.
  • Might want to go through the Audio FAQ's on asrock's website
• It's possible the Win8 drivers on asrock website may not work under Win10. However it appears this alc662 has a Win10 driver as seen on Lenovo so a driver IS available/compatible
• Can you uninstall all the audio devices? I suspect one is possibly overriding the built-in one. You have a iPhone, JBL, Microsoft Proxy/Streaming, Phillips, USB, Wireless Controller
• Could be worth resetting CMOS. Refer to pg18 in manual
• I don't know much about Linux, but I have had various wireless & audio issues many times that eventually get fixed with some configuration change so it not working that could simply be complexities/particularities of Linux. Your lshw shows a Nvidia MCP61 audio device. The lspci indicates the MCP61 is actually the chipset that in turn talks to the audio controller