Game Crash

Why does game crash when i get in the game? And then it repairs (5 mins or 3 mins) and my team remakes i lost LP and get leavebuster, is that fair ? I have all updated and (graphics cards, DirectX )... It won't crash every game but when it crash i get leavbuster for no reasons, fix your client it is time i saw game crashed for no reasons on LCS.. Btw i tried everything on YT to fix it, its about client not me..