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Paper Tape
Posts: 4
Registered: ‎01-12-2010
Location: Berlin
Message 1 of 2 (506 Views)

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!



Microsoft MVP Contributor
Posts: 21,009
Registered: ‎12-19-2008
Location: Australia, Melbourne
Message 2 of 2 (484 Views)

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
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