league client tab won't close on my laptop
i played league, about three games on my laptop, and then when i tried to ex out of league, a white screen appeared, this screen would go away no matter what and is called league client, i can't play as it won't load the actual game with this on my computer, and i cant restart my computer because it needs to turn off the tab before the restart. this is inconveniencing me so does anyone know how to get rid of it?