Initially I wasn't sure if it was just a coincidence but now I'm sure. My laptop functions perfectly fine running anything else, including the NA client, but while running the PBE client my laptop will randomly shutdown. This occurs nearly every game. After it shuts down it can be turned back on instantly and run the PBE client perfectly fine until next game where it repeats itself. I've found this to happen on the proving grounds and it is not champion dependant. Also, once it reset all my settings including screen resolution.

Is anyone else having this problem?