I have the exact same issue updated my controller I have the one you can plug 6 RGB wires into the controller it randomly stopped working won't even recognize on my ique but my commander pro will. Tried resetting it, deleted corsair 5 times and re installed, unplugged USB and moved it all over the board even into my commander. Unplugged Sata and plugged back into a different connector with 0 luck fans stuck on rainbow. I loved the corsair fans but with this issue I'm getting irritated, I have corsair AIO corsair vengeance pro memory and corsair STRAFE m2 keyboard and they all light up just fine. can control the fan speed with my commander for my fans on the AIO but fans stuck in rainbow. The only thing I have not tried is removing 1 fan led connector and plugging it into the commander to see if it is software related or node related. Frustrates the living crap out of me because I'm looking to go full custom loop and I'm starting to rule out corsair.