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To save your preference for the brightness, follow these steps: 1 Right-click the power status icon on the taskbar and select Power Options. 2 Click Change plan settings under the current power plan. 3 Click Change advanced power settings. 4 Select the Advanced settings tab. 5 Double-click Display. 6 Adjust the LCD brightness setting in the item for brightness adjustment. Troubleshooting > Display n185 N . On models with an ATI video controller, you may find your computer screen temporarily goes blank: . When you connect or disconnect the AC adapter . Immediately after you start the computer with battery power To save your preference for the brightness, follow these steps: 1 Click Start and Control Panel. 2 Click Hardware and Sound. 3 Click Change when the computer sleeps under Power Options. 4 Click Change advanced power settings. 5 Scroll down the list and double-click ATI Graphics Power Settings. 6 Double-click the option for the ATI POWERPLAY™ settings. 7 Change the current option for On battery. 8 Click OK. Troubleshooting > Display n186 N What should I do if the external display remains blank? If you cannot change the display output with the Fn+F7 keys, you need to change the settings for the external display with the VAIO Control Center. To change the settings, launch the VAIO Control Center, select the control item for the external display, and then click to select the check box for changing the options to detect the external display. Then, use the Fn+F7 keys to change the display output. How do I run Windows Aero? To run Windows Aero, follow these steps: 1 Click Start and Control Panel. 2 Click Customize colors under Appearance and Personalization. 3 Click Open classic appearance properties for more color options. 4 Select Windows Aero from the Color scheme options on the Appearance tab. 5 Click OK. For information about the Windows Aero features, such as Windows Flip 3D, see Windows Help and Support. Troubleshooting > Printing n187 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 Control Panel. 2 Click Printer under Hardware and Sound. 3 Right-click the printer icon and select Properties. 4 Click the Ports tab. 5 Click to cancel the Enable bidirectional support check box. 6 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 optional docking station, check to see if the docking station is connected to an AC power source. Troubleshooting > Microphone n188 N Microphone What should I do if my microphone does not work? If you are using an external microphone, make sure the microphone is turned on and is properly plugged into the microphone jack on your computer. 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 speakers and the microphone. Troubleshooting > Speakers n189 N Speakers What should I do if I do not hear sound from the built-in speakers? . If you are using a program that has its own volume control, make sure the volume control is properly set. See the program's help file for more information. . The volume may have been turned off by the Fn+F2 keys. Press them once again. . The volume may have been minimized by the Fn+F3 keys. Keep pressing the Fn+F4 keys to turn up the volume loud enough to hear sound. . Check the Windows volume controls by clicking the volume icon on the taskbar. What should I do if my external speakers do not work? . Check the suggestions in What should I do if I do not hear sound from the built-in speakers? (page 189). . Make sure your speakers are properly connected and the volume is turned up loud enough to hear sound. . Make sure your speakers are designed for computer use. . If your speakers have a muting button, set the button to off. . If your speakers require external power, make sure the speakers are connected to a power source. See the manual that came with your speakers for more information. Troubleshooting > Touch Pad n190 N Touch Pad What should I do if the touch pad does not work? . You may have disabled the touch pad before connecting a m...
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