I can hear whistling by changing the brightness level of Satellite A300

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  Could you please help me, use this computer with sunglasses is not an option...

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  Can change you the brightness level using the options in the options of food directly?
  Check it please this option.

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  The question is whether I can put on the second HARD drive for laptop Toshiba A300-1EG, there is a place for one I found and what HARD drive it's, I mean 2.5 "and etc?

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  Merry Christmas!
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