I had the same problem and i didn't even realized beacuse i had turned off the RGB. What i did was to unisntall ROG Aura Core (Win10 App) and Aura Service from control panel. Then you should go to eSupport folder (for me, it was located in my ssd), then you can either open ASUS Installation Wizard and install Aura Service from there or you can follow this route: eSupport\eDriver\Software\Win32App\ASUS and you'll fSind the Aura Lightning Service folder, you can install Aura Service directly from there. After installign Aura Service, install ROG Aura Core again from Win10 Store and the rgb should be working fine again. Hope this help you.