Brightness slider in power plan settings recently disappeared.
How to fix it?
Best Answer
The solution is:
Start -> Control Panel -> Hardware and Sound -> Device Manager.
In the Device Manager window, look for “Monitors”, then right-click your monitor and select “Uninstall”. Be sure to also check the “Remove driver” option. Once removed, click the “Scan for hardware changes” icon.
Voila. “Adjust plan brightness” returns, mystery solved.
If it is a laptop, it will most likely come back if you reinstall manufacturer's management tools software. The are usually full of unwanted stuff, but if you uninstall them, those on screen goodies like screen brightness indicator will go away too.
Best Answer
The solution is:
Start -> Control Panel -> Hardware and Sound -> Device Manager.
In the Device Manager window, look for “Monitors”, then right-click your monitor and select “Uninstall”. Be sure to also check the “Remove driver” option. Once removed, click the “Scan for hardware changes” icon.
Voila. “Adjust plan brightness” returns, mystery solved.
References:
Wayne Khan's Blog
Microsoft TechNet