I haven't been able to play League of Legends in a while, I've only now just managed to.
What happens is, when I have the game set to fullscreen mode, I will eventually freeze, crash and get a bluescreen that says atikmdag.sys has failed.
Stop code is: VIDEO_TDR_FAILED
I looked up what might be the problem and most of what I saw was driver issues, so i updated and installed ones I needed, but still, I crash and get the same error.
However, I changed my game settings to be running in borderless mode, and so far haven't experienced a crash. It just seems very odd that in one mode I crash every game, and another I don't.