Windows 7 professional is installed in my dell latitude e6410.
I searched net to switch off auto brightness feature and found to turn off "Enable Adaptive Power" option under display option (control pannel>hardware and sound>power option> change plan settings and scroll to display).
But this option does not exists under display option.
There is light sensor and it adjusts light much dim as required and i had to keep a light on permanently in front of my laptop to keep its brightness more.
Please help to turn this irritating auto brightness option.
Thanks in advance.