Windows 7 – Laptop Screen is Dim When Using Battery Power – Dell Inspiron 1420


I just installed Windows 7 on my wife’s Dell Inspiron 1420 which previously had Vista on it. Since then the screen is very dim when using battery power – and cannot be maximized (despite adjusting brightness settings in Power Options (in the Control Panel)).

It turns out that there is a setting for brightness in the Bios that needs to be adjusted.

  • Reboot and then Press F2 to enter the Bios.
  • Down Arrow to the Video section
  • Select the Brightness option and press Enter
  • Use the right arrow key to adjust the brightness
  • Press Enter to exit the option
  • Press Escape and then save changes when exiting the Bios.

My Bios version is A09.

Source: http://social.technet.microsoft.com/Forums/en/w7itproperf/thread/65fd2cf2-f781-440a-8fca-e62e2a717eb9

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2 thoughts on “Windows 7 – Laptop Screen is Dim When Using Battery Power – Dell Inspiron 1420

  1. vm schraa

    I bought a Dell with Vista 6 years ago and it never brightened on battery power, no one was able to figure out why. This worked! Thank you so much!

    Reply

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