I bought a new HDD and SSD drive, so I went ahead and put a fresh install of Win10 on there.
Everything went smoothly, but now I'm not getting any sound through my speakers.
I plugged my speakers into my mp3 player using the exact input that the computer was using, and it played my mp3s perfectly, i.e., doesn't appear to be a speaker/wire issue.
I checked the Volume Mixer, nothing is muted and I can see a signal for the video (that I can't hear) playing in the background.
Also, on Playback Devices it says that speakers are "Not plugged in" and the Realtek Digital Output is showing a sound signal.
The volume is up, of course, not muted anywhere in settings. I have it plugged into my onboard motherboard's soundcard, and it worked perfectly before the Win10 re-install.
I uninstalled drivers, updated them with Driver Booster, restarted and still nothing.
Finally, in my Device Manager I uninstalled both of these in the picture below, restarted, re-installed the drivers, and still nothing.
The only thing different that I may have changes is that I bought a headphone/mic set that plugs in to USB. That works fine, I unplugged it, and now there's no sound. To be honest, I'm not sure if the sound was working after the re-install of Win10 and before the insertion of the USB headphones, as it was only a few minutes and I didn't think to test the speakers.
I hope I provided all the information! Please let me know if there's anything else I can try! Really hoping nothing is cooked as I completed this build 3 weeks ago, and everything is brand new.