CRASH

Ever day now I have had to uninstall League because the game wouldnt play right. What do I mean by this? I mean every time I have gotten on and went to play a game I cant go to champion select on every game mode. the screen will just turn black and nothing will happen. This has been happening to me for 2 weeks now and I have reported this already and nothing is happening. WTF is happening Riot? I would like to get this fixed ASAP. Or I just might just stop playing from here on out cause this is starting to make me mad.