Random disconnect

Hello, so here it is ive got a problem that i wanna resolve but i dont find any answers: So basically i noticed that i get a reconnect every game and that happen like 5 min or 10 min after the game is started, that happen only once-a-game but thats annoying because that gives everytime a free kill to the enemies. I precise thats my ping and ips are normal when thats happen. What are your thoughts ? Ive made a complete repair of Lol but thats still heppening EVERY GAME.

Thank you if u have read me and maybe answer to me.