I can not run the 6th gpu on my rig

[Farmfamily]

Hello friends,

For some time I’ve been trying to run 6 gpu in the rig mine and I can not. Although it has reduced several features in the bios of my motherboard and made every configuration imaginable, I can not run 6 gpu. Energy is not, since I already put 1500w of psu, being that the rig (in the wall) consumes 890w.

My features:

And there, I do not know what else to do … I need your help.

[kichsp]

tried to replace the riser?

[Farmfamily]

Yes, brother. All!

[Farmfamily]

hardware I think it is not. I have already made all the necessary changes to Bios to release tracks, but still nothing! Is there anything related to the processor (CPU)?