GA-Z77-D3H 7.1 speaker config

[sibro]

so my speaker are connect as follows Blue - side, Black - back, Green - Front, orange - centre LFE.
in the Via audio deck there suppose to be a 8 channel button but this is missing, and I cant set the blue jack to sides speakers, the others work fine. so how do I setup 7.1 sound?
under speaker options Side pair is greyed out

via driver 6.0.1.10200
windows 7 64bit SP1

[sibro]

solved updated drivers to 600110400 from www.station-drivers.com

[Dark Mantis]

Hi and welcome.

I see that you have already found the solution so that is good news anyway.  The first thing to check is drivers and BIOS updates when faced with a problem like that. Have fun now.