Sorry to hear about the outages. Your Nucleus last checked in with us two days ago, around the time of the power and Wi-Fi problems you mentioned, and it has not been online since.
Please unplug the Nucleus from power, wait about 30 seconds, and plug it back in. Then please connect a TV or monitor to the HDMI port on the Nucleus and let us know whether anything appears on the screen.
If the screen shows an image, please post a photo of it here and we will take it from there.
If there is no image at all, the best next step is to get in touch with our RMA department directly, as they’re in charge of all hardware-related Nucleus issues. To do so, open the Typeform link below and select “Other” followed by “This issue is related to a physical component”.