Laptop Sleetbook 14-b017cl with Windows 8.1 - Brightness control drops to lowest setting during operation -more often when I press numeric keys - turning off adaptive brightenss in power options does not fix problem. I have current video driver from HP installed. Brightness can be readjusted using power setting plan or settings>brightness control but brightness will drop to minimum setting immediately. I have researched this problem and several sources show the problem is with the Intel HD Graphics 4000 driver. Specific help needed if possible - Thank you.
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