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boamalions
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hellomy laptop has windows 8 preinstalled and activatedi buy it with windows 10 installed and activated but i can't change the screen brightness due to intel hd graphics 4000 driver incompatibility with windows 10i downgrade to windows 8.1. the same situation. impossible to change the screen brightness due to intel hd graphics 4000 driver incompatibility with windows 8.1i download windows 8 pro iso file from a website. when i install it.i can change screen brightness but windows 8 still inactivated and give me the error code : "0x8007007B" when i want to activate it.my first question is : i
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