Client Crash on Champ Select (ARAM only) and a random Sound bug.

I don't know why it's happening, I don't have any clue at all. Since yesterday whenever I start an aram the client crashes and I have to close it to re-open it. Does anyone have the same problem as me? Is there a temporary fix?

In second place, that's been happening since a couple of patches, sometimes the sound just "bugs out". The sound literally disappears and reappears randomly back to the client or in the next game. It's not my pc's fault, 'cause the music keeps playing while this happens.

If anyone has a clue I'll be glad to hear it, thank you.