I have an EVGA 780i motherboard and windows xp.

I downloaded what I thought was the latest version of nTune for the sole purpose of changing fan speeds. However, when I launch nTune and enter the motherboard menu, all of my fans are grayed out. Same with my voltages too.

Any suggestions?

Perhaps the fans you are trying to change are not speed adjustable?
nTune can be annoying like that though, i could be wrong but i think they have stopped support for nTune now.
What fans are you trying to speed up, i suggest trying riva tuner.

Well, on my previous motherboard (EVGA 680i) nTune worked fine.

I do have Rivatuner but I can't figure out how to change the fan speeds O_O

Is Rivatuner capable of changing all fans? (cpu, northbridge, system, etc)?

Oh sorry man i meant for only the GPU.
the 780i mobo is pretty new from what i know, so perhaps ntune does not support it yet? i think the latest version of ntune is still from 07 or early 08, so that would explain it.

Thanks for your help!

I had a feeling that the motherboard wasn't supported yet.

evga 750i FTW supported? hope so :S