updating BIOS

Hi
I just got a new Lenovo Legion Tower 5i. I tried updating BIOS and apparently have no idea what I’m doing. I downloaded the file for my desktop from the Lenovo website, ran the installer, and a command prompt window appeared which my computer is now stuck on.

The computer did not shut off, I can still hear it running. I know bad things happen when you turn it off during a BIOS update so I have no idea what to do. Do I risk restarting it? I don’t really see any other option- please let me know.