League of legends client wont open

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Hello, after i updated the BIOS on my computer the League of legends client wont open after the champion select... In taskmanager it says that League of legends client is not responding and i have tried everything and im getting kind of hopeless... Yesterday i had the same problem and then magically the client worked but when i woke up today and tried it doesnt work anymore. I appreciate all help, TY. (The picture is in finnish but it says that its not responding)
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