Lenovo G50 laptop's screen brightness automatically increases when turned on

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asked Sep 10, 2015 in General by pythonskynet (1,740 points)  
It's been 6 months since the purchase of Lenovo G50 15-inch laptop. Since 10 days, I'm facing a weird problem - whenever I turn on the laptop, the display brightness automatically get increased to the maximum level. I have to manually decrease it to the normal level. What could be the possible issue and fix for it?
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