Lton85

enter the UEFI> 1 - Advanced Mode > Onboard Devices Configuration > RGB LED lighting > When System is in sleep, SET=OFF 2 - APM Configuration > ErP Ready, SET = Eanble (S4+S5) will solve your problems with connected LEDs and USB

I have exactly the same problem. I use a CX650, sometimes it has a coil whine, the noise reaches the headset, this is becoming unbearable!