If your Razer BlackWidow Chroma lighting isn’t syncing properly, it’s usually a Synapse glitch or profile conflict. Try restarting Razer Synapse first, then make sure all devices are on the same Chroma profile and “Chroma Apps” isn’t overriding it. I’ve fixed it before by updating Synapse, unplugging/replugging the keyboard, and resetting the lighting profile to default. If it still acts weird, reinstalling Synapse usually clears any sync bugs.