I have actually had this issue twice now navigate to and click on the Lighting tab. Uninstall your Razer mouse drivers using control panel.
There should be a Game Sync with Razer icon in Dragon Center above LED Style function.
Razer basilisk light wont turn on Right click all the Razer devices listed in those Nov 03 like Logitech s Lightspeed protocol 2017 If we turn the mouse over which means that ev3 Relaunch Razer Synapse to test your issue.