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Updated Bios, now cannot play games

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Hello community. I have a really big problem. I'v gone to acer website and downloaded something called: Improve system performance (BIOS) in version 1.32. I've installed it. Now when I try to go into a video game, which uses nVidia graphic card (840m, driver up-to-date) (f.e League of Legends), it simply freezes the game, sometimes some strange colours start to appear and only thing I can do is manually restarting my laptop. Now, I tried to install older BIOS, like 1.09, but after opening the executable it tells me: value compare error. Is there anything I can do to prevent this from happening?

P.S Now sometimes Windows10 pops out some kind of notification like: League of Legends.exe was prevented from accessing your graphics card (and then it won't crash, but it won't work as well)


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