Tried to record video presentation from my surface laptop. Everything seems to be working fine, the camera can be enabled, and the audio bar is changing. However, after finished recording, I find there is no video from the built-in camera/audio from the built-in-microphone that was recorded in the file, I only got the screen of my presentation recorded. Really cannot understand this. This only way to get around is to plug in another USB webcam and record from that, then it works fine (both audio and video). However, really not easy to do, particularly on traveling.