How to Turn Down the Brightness on Your Computer

Reducing the brightness of your computer screen helps save electricity and battery power. It can also reduce eye strain if you are sensitive to bright back lights. On laptop computers, brightness is controlled by the computer's power settings, although there may also be quick access controls on the keyboard. Desktop computers that use external monitors rely on the controls on the monitor itself to reduce the brightness.

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Desktop monitors have built-in controls for reducing brightness.

Laptop Computers

Step

Look on the keyboard for a graphic of a darkened sun, often accompanies with a down arrow. Hold the "Fn" or "Function" key and press this sun key to reduce brightness. If you do not see this key, skip to the next Step.

Step

Click the "Start" button, type "power options" and click "Power Options" in the results list.

Step

Click and drag the bottom slider, labeled "Screen brightness," to the left to reduce brightness in your current configuration.

Step

Click "Change plan settings" next to the power plan that is currently checked.

Step

Click and drag the sliders under the "On battery" and "Plugged in" columns to set the brightness for each situation.

Step

Click "Save changes" to save your configuration.

Desktop Computers

Step

Press the "Menu" button on the bottom of your computer monitor.

Step

Press the arrow keys on the monitor to select "Brightness" in the on-screen menu.

Step

Press "-" on the monitor to reduce the brightness of the screen.

Step

Press "Menu" again to get rid of the on-screen menu, or just wait a few seconds for it to disappear on its own.