How brightness change acer laptop without function key

How brightness adjust acer laptop for aspire 5750 with function key
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More about brightness change acer laptop function
  1. If you right click on the sceen what options do you get ?
  2. Open the Control Panel and choose "Power Options". There should then be a "screen brightness" slider at the bottom.
  3. cut and paste from Microsoft

    To turn adaptive brightness on or off

    1.Open Power Options by clicking the Start button , clicking Control Panel, clicking System and Security, and then clicking Power Options.

    2.Under any plan, click Change plan settings.

    3.Click Change advanced power settings.

    4.In the list, expand Display, and then expand Enable adaptive brightness.

    5.To turn adaptive brightness on or off when your computer is running on battery power, click On battery, and then, in the list, click On or Off.

    6.To turn adaptive brightness on or off when your computer is plugged into an outlet, click Plugged in, and then, in the list, click On or Off.

    7. Click Apply. Click OK.
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