Computer shuts off while playing Kindred

So, This is the third time this has happened and for some reason it only happens when I play Kindred. I don't know if their is something special I do or what. But basically I play as Kindred and get lanes going but all of a sudden my computer just shuts off. Like completely as if someone flipped a switch. And It only happens when I play Kindred. Not sure if something is wrong somewhere.