Don't blame Synapse cause I gave up with that software and don't have it anymore. Keyboard still works. Lights don't work on any device. They went out when I was using Synapse, but I don't have that anymore and when I was trying to install Synapse (literally seriously trying) I installed it at some point, but then my keyboard wasn't recognised. I have tried installing Razer Synapse so much, it won't update and won't instsll properly anymore and comes up with an error. When I do install it though it will say that it don't work in that small window. Multiple problems here and about 24 hours of trying to fix everything. I have a mouse and the lighting still works on that btw. P.s One of the errors that came up I searched up and never found any information about it.