Humming Noise

Hello! I am using a Shure SM7B microphone connected to a Coda MB-1 Microphone Preamp Audio Booster, which then goes into a GOXLR. I have tested different XLR cables, but the issue persists. I suspect it might be electrical interference since my computer is located nearby. Could you please review...

I am using a ( Microsoft Life-Cam and software ) to record a video of one of my aging parents at night (They are currently in their end of life routine) and in case something happens during the evening hours we will have a video of what happened. Anyways I see that there is a terrible humming...