Help With Logitech Z506 Setup!

[Zaku77]

So I just got home with and am attempting to setup the Logitech Z506 surround sound speakers. My motherboard is the Gigabyte Gaming G1 Z97. My problem is that I can't get the surround sound setup properly. If the front and rear speakers work, then the center doesn't. Now I have the rear and center working, with the front being a no go. I am testing both through Windows and through the sound blaster control panel. I'm not even sure if I have everything plugged into the correct place because there are three colored audio wires to connect the sub--with all the speakers connected to it--to my Mobo--which has a main speaker audio port, rear, and center/sub. The mobo isn't color coordinated, though. I know this mobo supports 5.1 surround sound, but this entire process is really starting to piss me off. Any help?

[Zaku77]

To add to this, the front two speakers do work when I have the system set to be using headphones, then go back to not working when I change it back to 5.1

 

I've done some more testing, and I've come to some degree of the root of the problem. My computer does not recognize speakers in a 2.0/2.1 setup. It also doesn't recognize the front left/right speakers in a 5.1 setup--which would be the same connector. That audio plug does work just fine, however, when I set the system to headphones. The two stereo speakers work fine in that configuration. I tried this with my old setup--just two speakers--and the front right/left from the Z506. So what could be going on where that audio port only work when the system is set to headphones? Could I have mucked up with something I plugged in on the mobo during the initial setup? I admit that I am not super comfortable with that portion of building a PC, so it's certainly a possibility. Now that I've narrowed it down to this degree, maybe someone can help?

[ShearMe]

In the sound device list, did you right click > "configure speakers" to set them up?

[Zaku77]

In the sound device list, did you right click > "configure speakers" to set them up?

Yeah, I tried that before I switched over to the sound blaster control panel.