I greet everyone on this board, please i have this problem with this Asus ultrabook s56c which i change the broken screen and replace new and it was ok for some days now. but now when i on the laptop it can't display on the main screen again but display on the external. when i on it the it will flash the will be stable no sign nothing on the screen but display everything on the external screen rather.....please help me out brothers on board please. Thank you
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