laptop brightness question
I have a new studio laptop from dell. My questio is simple: When I plug in my laptop my screen is brighter. When I unplug it is gets a bit darker. I would like to know if there is a way to keep the screen just as bright wether it's plug or unplug.
I went into the control panel under power options and unfortunatly I only have two optiuon available. Putting the pc to sleep on when the display turns off.
My friend on his laptop as a third option which is the brightness of the screen. I do not have it. Is it a hiddeen option that I can enable?
I have Vistas as an OS
Thanks for your help