So the title pretty much says it all. Every 2 hours or so of playing a fangame (Never happens unless playing a fangame), my entire computer will crash but not to a blue screen but have any video source (like a YouTube video) have artifacts or make everything a turn into a spastic rainbow of colors. Sadly, I never get a pop up message of what happened and I'am basically forced to restart my computer which fixes the artifacts but 2 hours later of playing any fangame, the same thing happens. So I'am at a stump right now and any input would be great. Thank-You.
Edit, Added to photos of what happened today (1/25/2016 5:26pm) to maybe help someone find some evidence of why this is happening.
https://imgur.com/a/M0wh6