I see that many iterations of this type of question have been posted before. I don't know why but since a certain update a few months back, I am unable to capture League of legends as a game capture or window capture. I am running as administrator and i am not on a laptop.
Please see the following log file:
https://gist.github.com/30533736bbc0630d6b6803a84d3dc5f1
Please see the following log file:
https://gist.github.com/30533736bbc0630d6b6803a84d3dc5f1