Client Crash

I joined a normals game a little while ago, went through Champ select and close to the end the entire client just crashed forcing the dodge. I waited the give minutes and joined another normals, but this time I was banning and the champion selection screen for the banning phase was black. So I couldn't ban anyone, then after a bit the client crashed again. I'm not sure if it's on my end or if there's a bug, but I've already reinstalled the client once a few weeks ago.