I found the brightness slider on 100% (as I expected) but, as I dragged it to the left, to dim the screen, it first brightened and then started dimming, i.e. I once went to the "adjust screen brightness" window when the screen had dimmed. Yet when the screen starts playing up I can end up with the screen dimming and brightening almost continuously. ![]() ![]() I have checked many times the battery/power-saving settings always leaving the settings the same way full brightness and never dimming when on the mains. The battery is always fully charged and connected to the mains. In fact the brightness is varying even as I type this. Sometimes the screen seems to persistently dim and/or brighten up, even as I am doing things. ![]() I have a Cryo laptop with Windows 7 installed, bought in December 2011.
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