Question about Dell Inspiron 1521 Laptop

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Screen goes blank when on battery power

Hi, please can someone help me...

My dell Inspiron 1521 works perfectly when plugged into the mains however as soon as the AC is disconnected and it is running of battery power the screen goes balnk. The computer still works, I simply just loss the screen and have to shut it down.

Is this a problem with the backlight? Seems strange that I don't loss power when running of the battery just the screen??..?

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  • blazinwilly May 11, 2010

    You may have a bad battery...laptops typically go dimmer to save power when running on the battery. If it's still running when on the battery. try brightening it back up by holding down the fn key and then press the brightness up key. Hope that works.

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Two possibilities: The display is a power hog. It's possible that the battery is failing, and has enough power to run the PC, but not the PC AND display at the same time. You would need to replace the battery, in this case. Or, in Control Panel, in Performance and Maintenance, in Power Options, there should be settings somewhere for the display when on battery or AC power. Make sure that the one for Battery doesn';t turn the display off after 0 minutes.

Posted on Mar 04, 2009

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