Anyone please help me :((+

Can someone please help me! After i open league and press ''Play'', it says: The procedure entry points>>1MiniDmpSender@@UAE@XZ could not be located in the dynamic link library C;\Riot Games\League of Legends\LeagueClient.exe. I tried to reinstall the gamebut it still has the same problem and i am rlly want to play. Its been about 2 week that im trying to fix this problem. If you know how to solve this problem or think you can help me out, PLZ TELL ME :(( (btw it says Posting as crazydude200 but i recently changed it to Bnyce)