Patching failed and we're not sure why.Please restart the client to try patching again.

So,yesterday i wanted to play LoL,i launched the client and there was a patch.While it was patching in a moment something popped out: Patching failed and we're not sure why.Please restart the client to try patching again.(error code 004) please help i cant play the game for like 3 days because of this! I Tried reinstalling,hextech repair client,restarting the PC turning off the antivirus Help me please ! [zombie-nunu-tears]