So the past few day my Asus has just shut down by itself. I would just be listening to some music while working and it just powered down. It does not happen while playing games like Warframe. So what could be the issue here and how can I fix it?

So recently I tried using the Miriles Action Recorder program to record myself while playing Outlast, I used a microphone to record commentary. When I reproduced the video, their seemed to be an awful lot of lag from the game audio as well as the co...