Under Record Settings, Primary Sound Device, if Microphone is "Disabled" Bandicam is able to record the video fine. Of course there is no audio.
If I were to choose (Default Input Device) for Microphone, it will crashes immediately once recording starts.
I tested using another webcam recording software, Debut Video Capture (Trial) version and it is able to record both video and audio properly on my laptop. However I prefer Bandicam as it's video codec supports hardware mode and is more efficient resulting in lower CPU utilization and higher fps.
PS: This is for Bandicam v5.0.1.1799