My desktop machine is a Windows 7 32-bit. My problem is that when I read a PDF, the brightness of screen bothers me and I want to reduce it. My monitor is a Samsung LCD and only has a button. When I press it one time it turn the screen on/off and when I press and hold it, it just adjusts the wallpaper.
Is there a way to reduce it?
definitely
not controllable; I suggest you search for the monitor model and see if there is any software for it.