I'm using Dell inspiron 4030 notebook (new) . I tried to reduce the brightness using keys (fn + brightness key) but it does not work. Is there something to do with drivers ?
See if you can set the brightness in the Power settings.
There is no contrast adjustment for LCD screens.
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New computers do not use the FN key with the brightness key. Try the brightness key alone. You can change this behavior in Windows Mobility Center. The F keys serve double duty--with and without the Function key.