Sunver

This is my first post on this forum so allow me to say hello! :biggrin: I know the thread is quite old but what I may suggest is the solution to the similar problem I had. My mouse - being Corsair Dark Core RGB Wireless (no SE) lighting stopped working (quite suddenly). I use it with two different laptops (and USB Hub). I started switching options in iCue (Hardware Lighting, Actions, Profiles, OnBoard Profiles). Nothing helped. Then I realized that sometimes I use my mouse in BT mode, sometimes in Wi-Fi mode and checked the Settings tab. The setting outlined with yellow was the reason my RGB didn't work... It was in Power Saving Mode. Put it in Performance mode and it should work, unless there is something wrong with the mouse board or LEDs.