Audio :: Speakers Not Detected Properly?

I am using windows 8 pro x64 with an asus P8P67 LE motherboard and have a 5.1 sound system. I installed win 8 fresh and the audio was working fine. One time when I booted up, the audio sounded off. The sound was only coming out of the front left speaker. I did the speaker test within win 8 and the realtek menu. The front right speaker is being detected as the subwoofer and the rest are fine. It's the only speaker not working properly so it's like having two subs. I tried setting it to stereo, 2.1, speaker fill, ect... with the same results. I have not messed with wiring or software. Sometimes it would go back to normal but then do it again randomly. In the end, I reinstalled win 8 and it worked fine. Then suddenly, it happened again. The only difference this time is that it will not go back to normal by itself. It seems to be stuck on this "setting". I did do some research but I guess I didn't do it well enough because I could not find an answer that would work. Again, it worked fine in win 7 and sometimes in Windows 8. I have checked the wires to make sure nothing has changed and that they are connected well and they are fine. I tried changing the speaker settings and speaker fill but with no results. I don't know what else to try.