Razer Kraken - Muted MIC still picks up sound from the PC

Hey guys, I've bought the headset and encountered a problem, 1. When i'm muting the mic, and have a vid playing or anything else playing, it "leaks" to the mic, Its like i'm recording the wave sound that's playing and no, there's no other recording source enabled other than Razer Microphone, I've tested it with 2 different PC's and it is the same. I tested it with a default voice recording app windows has, and with discord. my friends hear the sound playing while the mic is muted better that my voice when it's unmuted lol.. 2. When the mic is not muted, it's very weak, even when i'm at 100% strength Is it possible it got something to do with the connected cables i got when purchased this headset?