why wont league of legends up date and be able to play

i have try 50,000 times to try to play league and i have still not been able to play all it does is pop up and gets to 78% and stops and wont move and if you close it and re-open it doses not open it says that it is not responding or pvp.net is not working. riot i have put a lot of money in this and you need to fix it.