Dell Precision M90 - Manual (Page 19)

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Using the Display
Dell Precision™ M90 User's Guide
Adjusting Brightness
Switching the Video Image
Setting Display Resolution
Adjusting Brightness
When a Dell™ computer is running on battery power, you can conserve power by setting the brightness to the lowest comfortable setting by pressing
and the up- or down-arrow key on the keyboard.
You can press the following keys to adjust display brightness:
l Press and the up-arrow key to increase brightness on the integrated display only (not on an external monitor).
l Press and the down-arrow key to decrease brightness on the integrated display only (not on an external monitor).
Switching the Video Image
When you start the computer with an external device (such as an external monitor or projector) attached and turned on, the image may appear on either the
computer display or the external device.
Press to switch the video image between the display only, the external device only, or the display and the external device simultaneously.
Setting Display Resolution
To display a program at a specific resolution, both the graphics card and the display must support the program, and the necessary video drivers must be
installed.
If you choose a resolution or color palette that is higher than the display supports, the settings adjust automatically to the closest supported values.
1. Click the Start button and click Control Panel.
2. Under Pick a category, click Appearance and Themes.
3. Under Pick a task..., click the area you want to change, or under or pick a Control Panel icon, click Display.
4. Try different settings for Color quality and Screen resolution.
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NOTE: Brightness key combinations only affect the display on your portable computer, not monitors or projectors that you attach to your portable
computer or docking device. If your computer is connected to an external monitor and you try to change the brightness level, the Brightness Meter
appears, but the brightness level on the monitor does not change.
NOTE: If you change the display resolution from the current settings, the image may appear blurry or text may be harder to read. Before you change
any of the display settings, make a note of the current settings for future use.
NOTE: As the resolution increases, icons and text appear smaller on the screen.