Razer cynos chroma is not working at all

i just bought my kayboard and it was working fine. I turned on my PC but the keyboard was not turning on, it didnt turn on leds. I wanted to type the password but the keyboard just wasnt working si to do it i used another keyboard. I reistlled the razer synaps 3. And nothing. The computer didnt detect this keyboard. I changed usb ports. And i was so angry that i randomly started to slam my kerboar and it turned on. It was working fine till i didnt turn of the PC. Next morning i tryed to type some randome combinations to activate it. Any idea what is the combination? Or what is the problem?