Logo shows up but the game wont work

the game just stopped working, first it wont let me go into matches then all of sudden when i closed it , it shows me the logo and wont open....... also while im at it, it auto disconnected me 3 times in the past week for no reason, my internet was fine but the game just disconnects if i didnt quit and reconnect it wont work. halp >also tried to delete lol patcher, and lol luncher, didnt work, also tried running as admin, didnt work.