Hi XBrookieX,
OK - so I downloaded the drivers from here:
https://www.asus.com/support/Download/1/42/3/3/SNYTZvOdMa6xGWYL/35/. I choose Windows 10 and then Audio. I then download the drivers: Realtek Audio Driver V6.0.1.7571 for Windows 7/8/8.1/10 32bit & 64bit.(WHQL). That said, I reboot the machine. When I go to playback devices, it shows the speakers with a green check mark. Properties confirm that it has the RealTek Drivers installed (what's odd now is that this time I didn't get the RealTek Audio Manager installed nor the ROG additional items). I go to configure the speakers, put it at 5.1. When I test it, nothing out of any of the speakers other than the center speaker. When it plays the front left & front right speaker there is sound out of the center speaker. When showing the rear left; rear right and center, no sound. Under the next option of Customize Your Configuration, I have Center; Subwoofer and Rear Pair all checked off. Under Select Full Range Speakers, I have front left and right checked and surround speakers checked. When I've tried going the optical route, I get no sound at all. Any help is greatly appreciated.
Edit: I have it set at 24 bit 4800 Hz also.
Thanks.