Irritating experience [ dump file and spellbook ]

So I enter lobby pick my champion and start making runes when i chose my keystone rune the game stops and a new tab opens saying “ failed to create dump file “ and when I press OK it restarts the game and Im automatically playing with Unsealed Spellbook or more likely Uselessbook. SERIOUSLY do something about that Im getting that dump file think every third or second game and play with Uselessbook and thanks to this useless rune I lose lane ...
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