In windows 7 and 8 you can change the brightness of the screen through the control panel in the power supply.
Change screen brightness windows 7.
Open the settings app from your start menu or start screen select system and select display click or tap and drag the adjust brightness level slider to change the brightness level.
Dragging it left will reduce your laptop s screen brightness while dragging it right will increase the brightness.
I accidentally found this playing a video game and hitting the wrong keys and it took a while to find the official key combination.
If you re using windows 7 or 8 and don t have a settings app this option available in the control panel.
If you don t see the screen brightness slider at the bottom of the power options window you ll need to restore it before you can adjust your laptop s brightness.
Windows control panel isn t the only way to change the screen brightness in your device you can also change the brightness of your device screen in windows 7 using the windows mobility center.
This slider is at the bottom of the window.
Some pcs can let windows automatically adjust screen brightness based on the current lighting conditions.
How to adjust screen brightness on windows 7 normally open the windows 7 control panel you can see the power options to change the brightness of the function left and right drag change brightness slider to adjust the brightness of the display but the brightness adjustment feature of windows 7 doesn t always appear in the control panel even though we can t adjust the brightness after.
You can launch the windows mobility center in windows 7 by pressing the windows key and x and then sliding the slider given under the display.
In windows 7 on my desktop you press the windows key and the left and right arrow keys to adjust the brightness.
This automatic setting helps make sure your screen is readable wherever.