0xc0000005 error preventing me from playing

Hi, Recently (today) I started getting the "application didn't start successfully (0xc0000005)" error when trying to enter a game. The client works fine, I can get into Champ Select no problem but I cannot enter the actual game. I had to afk two ranked matches because of that and that made me very sad {{item:3070}} because I always try to be in good standing with the community. Anyways I tried reinstalling the game twice and running CCleaner but that didn't help at all. Any help will be appreciated. Thanks!
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