Why can I no longer adjust LCD brightness when using battery power?

Abhigyan May 1, 2010
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I am using Windows 7 on my Dell Inspiron 1420. I have all the latest drivers installed. However, for some strange reason, I cannot change the brightness of my LCD while it’s on battery power. I could do so perfectly till a few days back. Any ideas?

  1. Anonymous
    July 16, 2010 at 2:23 pm

    I was able to solve the problem by removing and reinstalling the Dell QuickSet. Apparently, Dell QuickSet makes some weird changes to the power settings.

  2. Matt Rider
    May 2, 2010 at 8:54 pm

    have you tried pressing Windowskey + x to get the windows mobility center...here you should be able to configure brightness

  3. Johnathan TheTool Lane
    May 1, 2010 at 8:43 pm

    Ummm....I'm assuming you have something accidentally set in your energy savor settings that dims the LCD to save power. Try checking that out.