The screen becomes black after champion select
After today's update, I can't play games anymore, my laptop's screen keeps going black after both team's champion selecting is done. The only thing I can see on my screen is a mouse. I try to reconnect, but it's not working. All I can do is waiting. The screen will become normal again when the feedback comes out, and all I can see is my teammates swearing and a heartbreaking DEFEAT. I already got 4 AFK in rank because of it, I feel bad for my teammates and at the same time I really want to play. Please, someone help me.