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Paper Tape
Posts: 2
Registered: ‎03-18-2013
Location: saudi arabia
Views: 641
Message 1 of 4

Brightness not responding good

Good day,


 the problem Im facing with ideapad z400 is,when I pressed the brightness control (up or down), it will respond ones/ twice then stuck.. Already re-install the windows update the drivers. I'm looking for bios firmware,but it's not website.


Thank you...

Social Support Agent
Social Support Agent
Posts: 5,822
Registered: ‎02-11-2012
Location: PH
Views: 620
Message 2 of 4

Re: Brightness not responding good

hi mickogm,


Welcome to the Lenovo Forums.


If you're using Windows 8, can you download and install the file below and try to press F11/F12 to adjust the brightness.


Lenovo Energy Management



Let me know your findings



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Paper Tape
Posts: 2
Registered: ‎03-18-2013
Location: saudi arabia
Views: 604
Message 3 of 4

Re: Brightness not responding good

good day,


i  found the's the intel HD 4000 graphics driver,if you updated it ,the brightness control start to messed's only work with outdated driver.(originally installed when i bought the laptop.) i downloaded the driver from lenovo chinese site.


thank you..

Community Moderator
Community Moderator
Posts: 1,332
Registered: ‎12-19-2011
Location: MY
Views: 585
Message 4 of 4

Re: Brightness not responding good


Good find. If you have the time, maybe you can try updating the Intel HD drivers again then uninstall the energy management and reinstall it and see if it works fine then?


*Non Lenovo employee*

I have a Y530 ... Feel free to highlight any post which you have posted on the forum to me if no one have chimed in.

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