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Stop video playback, change the display output to the computer screen, and then restart video playback. To change the display output to the computer screen, press the Windows+P keys twice and then press the Enter key. . The video memory of your computer may be insufficient for displaying high resolution videos. In such a case, lower the resolution of the LCD screen. To change the screen resolution, follow these steps: 1 Right-click on the desktop and select Screen resolution. 2 Click the drop-down list next to Resolution. 3 Move the slider up to increase or down to decrease the screen resolution. . You can check the total amount of the graphics and video memory available. Right-click on the desktop, select Screen resolution, and click Advanced Settings and the Adapter tab. The displayed value may be different from the actual amount of memory on your computer. What should I do if my screen is dark? . Press the Fn+F6 keys to brighten your computer screen. . Blocking the ambient light sensor turns your screen dark. Make sure that the sensor is unblocked. What should I do if the external display remains blank? Press the Windows+P keys twice and then press the Enter key to change the display output to your computer screen. Troubleshooting > Display n191 N How do I run Windows Aero? To run Windows Aero, follow these steps: 1 Right-click on the desktop and select Personalize. 2 Select your desired theme from Aero Themes. For information about the Windows Aero features, such as Windows Flip 3D, see Windows Help and Support. What should I do if a software application does not work properly when the docking station is connected to my computer? . If you are displaying images both on your computer screen and the external display connected to the computer or the docking station, select either display as the display output destination. To change the display output destination, see Selecting Graphics Modes (page 137). . Disconnect the docking station from your computer. How can I enhance my computer's performance? By connecting the supplied or optional docking station to your computer, you can use the graphics accelerator on the docking station and enhance your computer's performance. To display images on your computer screen, select Computer Display mode as the graphics mode. To display images only on the external display(s) connected to the docking station, select External Display mode and change the settings for the display output destination. See Selecting Graphics Modes (page 137) for more information. Troubleshooting > Display n192 N Why can't I display the same images on my computer screen and the external display connected to the docking station? You cannot display the same images individually on your computer screen and the external display(s) connected to the docking station at the same time. Troubleshooting > Printing n193 N Printing What should I do if I cannot print a document? . Make sure your printer is on, and the printer cable is securely connected to the ports on the printer and your computer. . Make sure your printer is compatible with the Windows operating system installed on your computer. . You may need to install the printer driver software before you use your printer. See the manual that came with your printer for more information. . If your printer is not functioning after your computer resumes from a power saving mode (Sleep or Hibernate), then restart the computer. . If the bidirectional communication functions are provided with your printer, disabling the functions on your computer may enable printing. Follow these steps: 1 Click Start and Devices and Printers. 2 Right-click the printer icon and select Properties. 3 Click the Ports tab. 4 Click to cancel the Enable bidirectional support check box. 5 Click OK. This disables the bidirectional communication functions of the printer, such as data transfer, status monitoring, and remote panel. When your printer is connected to the docking station, check to see if the docking station is connected to an AC power source. Troubleshooting > Microphone n194 N Microphone What should I do if my microphone does not work? . Your computer is not equipped with the microphone jack. You cannot use an external microphone. . When using the noise canceling headphones as a microphone, make sure the headphones are properly plugged into the headphones jack on your computer. . Your sound input device may have been incorrectly configured. To configure the sound input device, follow these steps: 1 Close all open programs. 2 Click Start and Control Panel. 3 Click Hardware and Sound. 4 Click Manage audio devices under Sound. 5 On the Recording tab, select your desired device for sound input and click Set Default. How can I prevent microphone feedback? Microphone feedback occurs when the microphone receives the sound from a sound output device, such as a speaker. To prevent this problem: . Keep the microphone away from a sound output device. . Turn down the volume of the spe...
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