Black screen after champ select, windows/firewall error.

At this point i am 2000% sure that this bug has nothing to do with the firewall error riot gives us as a "solution". So much of this has happened over the course of a week, got leave buster 3 times with 20 min wait ques and none of it is my fault! and it makes me so frustrated that i might just end up going back to dota... Riot i think you really need to address this issue because i am not the only one this happens to. Install a software of some sort where it runs league of legends normally after champion select.