I am using an external sound card for this Win 10 computer, it controls a radio transmitter. There is a lot of calibration required to maintain proper power levels and the first thing to be constant is the mic level set within Windows. I set the level in the sound control panel to as close to 0 dB as possible but Window 10 thinks it knows better what I need and keeps seemingly randomly moving the slider to the far right, to +30dB or in percent, 100%. This "feature" is something happening from within windows and it is a headache that happens several times a day and when I discover I am over-driving the amplifier I have to go back to settings & the sound control panel to again lower the dB / % back to the necessary level. What I would like to do is find out where in the registry to force Windows to leave my setting where I want it. Is there a registry fix I can make to do this? Thank you.