LeaveBuster for LoL crash on 79% or 100%

IDC why my game crash on 79% or 100% but i get leavebuster for no reasone i play some game 3-5 and then it just crash so i dont rly know what happend if thhe client dont recognize dat game crash. A PC shutdown i dont get leavebuster or if my internet just go off but i rly want to play so FIX the crash or i dont want to wait 20 minutes before game start [slayer-jinx-unamused]