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Paper Tape
Posts: 4
Registered: ‎01-12-2010
Location: Berlin

x300 brightness control not working under Vista

Hello everyone,


Suddenly the brightness adjustment of my laptop stopped working, and the screen is pretty dark now. Using the keys (Fn + x) northing happens (the green bars dont even show up). Plugging in the power cable doesnt change anything either, nor can i change the brithness using the power saving settings.


Maybe it is a driver related problem? I am using Vista x32 and the ill child is an x300 type 6477.


Thanks for any help!



Posts: 20,897
Topics: 128
Kudos: 1,250
Solutions: 1,344
Registered: ‎12-19-2008
Location: Australia, Melbourne

Re: x300 brightness control not working under Vista

go into your bios menu and then change the LCD brightness using the Fn + Home/End. This should test whether this is a software/driver related issue or hardware related issue.

Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft