Multiple sound devices no longer work (Reinstalled windows, no luck)

A couple of days ago, all my audio outputs stopped working. I have monitor speakers, an Aune X8 DAC, and a Marantz NR1510 AV Receiver.

I tried deleting my audio drivers, didn't work. Reinstalled Windows 10, installed updates, still doesn't work.

I tried plugging in some headphones to my PC Case's Aux port, and they work fine surprisingly, but all the audio outputs I actually use just stopped working.

The AV Receiver also stopped outputting video/audio from my PC to the TV, even though it shows up in the Display settings. This leads me to believe that it might be some sort of hardware issue with my PC.

I would really like to make sure it's not a software issue beacuse my PC has fully custom hard-line water cooling, so swapping out parts is a huge hassle.

Any help is greatly appreciated, as I've been troubleshooting all night, and am getting desperate (I've never posted on forums before). Thanks!

I wasn't 100% sure if these issues were caused by a Windows update, because I think I updated windows before the reinstall and it worked for a day or so.

I just made and tried a live boot disk with Ubuntu linux on it, and nothing (except the PC case Aux) worked again.

I tried moving my speakers, Amplifier and DAC to a different PC, and everything worked like normal. I'm fairly certain that there's some sort of hardware issue with my PC, but I'm still not sure if the AV receiver not displaying is related or not.

I'll try testing if the receiver works with another PC, since it wasn't working on Ubuntu either.

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And I also checked the windows version, it is indeed 20H2

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So it seems I have gotten everything except the monitor speakers working, I changed the input port on the back of the receiver and in the input settings, and I have Audio/video again through the receiver!

I decided to try the same thing with the DAC/amplifier and moved the DAC usb input to my PC case USB port (instead of Mobo USB), and that finally worked!

Still not sure what would have caused the audio devices to stop working with the PC's certain ports across different OS, but I have everything up and running again!

I appreciate your help, dalchina. I never would've thought of using another OS to troubleshoot my issue.

Time to reinstall all my programs and settings! 😭

I was think, by the look of that lovely piece of Sound Gear ,you've been using it to long and you need to send it to me for a few months to play some oldies but goodies , nudge,nudge -wink,wink my address is in the cloud ! ENJOY