LCD Brightness Control
You can adjust the LCD brightness in 8 levels.
Before You Start!
The LCD brightness is the brightest (Level 8) when the computer is running on AC power, and it becomes dimmer when running on battery power.
Controlling the Brightness Using the Keyboard
You can use the screen brightness control keys after installing Windows and Easy Display Manager.
Adjust the LCD brightness by pressing the 
+ 
key or the 
+ 
key.
The LCD brightness can change up to 8 levels and the brightness increases by 1 level when
pressing the 
+
key once.
LCD bad pixels principle of laptop computer
Samsung observes the specifications regarding strict quality and reliability of LCD But in spite of that, it is inevitable that there might be a small number of bad pixels. A large number of bad pixels can cause problems in appearance, but a small number of pixels doesn't affect the computer performance.
Therefore Samsung observes and manages the following dot principles:
-Bright dot : 2 or less
-Black dot : 4 or less
-Combination of Bright and Dark : 4 or less
Instructions for Cleaning the LCD
Clean the LCD panel with a soft cloth lightly moistened with computer cleansing detergent moving in one direction.
Cleaning the LCD panel with excessive force can damage the LCD.