My situation is a little different then the ones that you all give examples of. I had it happen about 4 times in games, Battle Field 4 primarily.
Then all of a sudden it stopped. I have been playing about say 5 hours or so of games this weekend, primarily trying to stress my system. I run fine on Heaven and Valley benchmarks. BUT --- If i run the 3DMark Sky Diver I can never get passed the part where she is in the cave and she throws that flare and it hits the top. When it hits the top of the water or whatever the graphic is that is when my system becomes unstable. Black screen and 100% fans kick in.
Can anyone say why mine is so different then all of yours?