How-To Geek

I have Windows XP on my Laptop.
How to manually adjust brightness on Dell Inspiron Laptop without using Fn key on the keyboard?

Have you got a C:\Windows\System32\mblctr.exe
file ? Change the path if needs be.

You can try calibrating your display using 'colour management', it should be in control panel

rupeshkp728,

Basically, in Windows , aside from the Fn combination, you can adjust brightness or other settings such as contrast, gamma etc., through the driver/configuration of the video card manufacturer in the advance display properties (if you've installed the drivers from the video manufacturer). Adjustments through this would be global (system wide). You can also adjust these settings individually from the software you are using such as in playing video e.g. vlc, wmp, etc.

Thanks all for the reply.
I will try your suggestions.