Dell laptop monitor is darker

Dell / STUDIO 1737
November 29, 2010 at 07:40:14
Specs: Windows Vista
before when my dell studio 1737 was plugged in the screen was brighter. Now it is darker like it is when it isn't plugged in even if it is.

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January 6, 2011 at 13:00:26
I just came across your post and sounds like I had an identical problem with my 1737 recently. When I plugged the computer in, the display dimmed dramatically but when I unplugged it, it would brighten up to normal brightness.

I found that it (at least in my case) had to do with my installing Service Pack 3 for Windows Vista. After installing SP3 Windows apparently inverted the plugged in/unplugged brightness settings and the power management can't fix it. Dell tech support was useless in helping with this, and sent out what amounted to a new computer in parts and the at home tech left the computer not functioning at all. I was left to getting it running myself by doing a system restore and editing some bios settings that the tech changed incorrectly.

The Fix for the brightness issue that worked for me in the end: Plug the computer in so it runs on AC and then press Fn+Up Arrow until the brightness reaches 100% (or whatever level you like the brightness at) and then unplug the laptop so it's running on battery and press Fn+Down Arrow until you reach about 50% brightness. The computer will remember your settings and when you plug it back in, it should brighten and when you unplug, it should dim as it did originally.

Hope this helps!

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