i updated my driver and now the game isnt working

i updated my dell driver to the newest version so it will be fun and ill have a better experience on my computer so i login into the client and think "hmm 1 more promo game to gold and then i can play ranked with my friend so it wont be cheesy" and right as the game loads the loading stops and says to check the driver is on the newest version and something about the video, i just updated it and its really making me sad and now i wont get a big mmr boost from not finishing promos with no losses
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