Skip Waiting for Stats causes client to go black

If the issue is persisting, download and run the Hextech Repair Tool and run the "Force Repatch" and it will repatch the game if your patch was corrupted. If a Force Repatch does not fix the issue, you will need to run the "Reinstall" in the HRT or use the Repair function in the League Client and it will repair corrupted game files.

If everything else fails, send a Support Ticket to Riot Support. Make sure to attach the logs generated from the Hextech Repair Tool in your ticket.