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F11 and F12 (Brightness keys) not working
The brightness keys on my laptop are not working. When I click on the F12 key, it shows on the bar that it's increasing, but my screen's brightness is actually not increasing/decreasing. I've tried several methods, but nothing seems to work. I tried uninstalling and re-installing my device adapter that didn't solve it. Some suggested enabling/disabling the Fn key; I normally don't use the Fn key to increase brightness so I couldn't try that option. Every key/action that controls brightness does not work. Is there a solution or is this permanent? Thanks for your help.
P.S. I use Dell Inspiron
ejn63
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July 22nd, 2017 16:00
What system model (Inspiron N5110, 5521, L411z, etc.) and what OS and version (i.e., WIndows 7 64 bit, etc.)?
Have you reinstalled the OS at any point?
Arthur1471
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January 2nd, 2018 11:00
i use Dell inspiron 5459 and i have the same problem. please help
jphughan
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January 2nd, 2018 11:00
Go to Control Panel > Power Options > Change plan settings (for your active plan) > Change advanced settings > Display > Enable adaptive brightness. Make sure that's set to Off.
Arthur1471
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January 3rd, 2018 10:00
it was set to off. but still its not working.
jphughan
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January 3rd, 2018 11:00
Try going into the BIOS and seeing if you can adjust the brightness there. That would at least suggest whether this is a hardware or OS/driver issue. I think most if not all systems have an LCD brightness setting in the BIOS.