I've got this LCD Monitor @ home that works but the "menu" button doesn't seem to be working. I need to be able to adjust the brightness, but how can I do that if I can't even get into the monitor's menu? Is there a software solution that I can use?
This depends on the monitor entirely.
For starters, if it is in warranty, you may just want to get it replaced.
If it is a NEC monitor, there is a utility you can download to adjust brightness, look on the website for more details.
Again - even if it is not an NEC, you may want to take a look at the manufacturers website just in case there is a utility.
Next if it is a proper button that has fallen in/out, you may want to try using an object such as a pen/pencil to try to touch the contact that it would of.
If this doesn't work, you may be out of luck - short of opening the monitor and trying to fix the problem.
A great application that works very well for my monitor–the only one I've found so far that actually sets the monitor's brightness instead of the video card's–is Display Tuner.
I also was suffering greatly from this problem - especially when external lighting was dim and the monitor would flashing powerful beams of light in my eyes. On computer with integrated intel graphics, you can use the Graphics Control Panel for brightness settings -
Right click on your desktop screen and select Graphics Properties. A Intel HD Graphics Control Panel Startup window (undecorated) should pop up.
The Intel HD Graphics Control Panel will finally load. Click on the Display menu option.
On the upper part you will have a Color tab. Click on it.
In Color enhancement set the brightness to your setting, one by one, for each color red, green and blue.
There you go with the cool look.
Note that you should be having the proper driver for opening the Intel HD Graphics Control Panel.