So uhh...had this issue a few days ago, started up League, after the initial login animation there is nothing that follows except a blank black screen. Had to re-install as I couldn't repair through the client due to the blank black screen to see if I could fix it, seems to have resolved it. Now I am having the same problem AGAIN. I think it might be a failed packet traversal from their servers but I could be wrong, anybody else having this problem? It is seriously annoying, can't play at all.