Hello, this (https://www.youtube.com/watch?v=wX9b337q5AU) happens to me randomly (though only during games until now, sometimes it doesnt even happen). When this happens only way is to shut down the notebook. I checked temps seemed to be normal most of the time. I use Win8.1. And my notebook is X550JX with extra 8gb ram and 128 gb ssd. What might cause this? Thanks in advance.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic