Overheating is an unexpected behaviour.
Did something change where the computer was being used (local environment) and/or was it a power supply overheat or a CPU overheat? A damaged USB cable could consume power in a serious way but the majority of cable failures i’ve seen failed open or had data loss.
The first place to start is regrettably with Windows and its Control Panel menu.
With both cameras connected confirm that Windows sees both and they’re working.
Enable the Microphone for the camera (I have no idea why the Microphone is important but it can foul up the permissions).