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. The volume may have been minimized by (the touch sensor button) or the Fn+F3 keys. Press (the touch sensor button) several times or keep pressing or the Fn+F4 keys to turn up the volume loud enough to hear sound. . Right-click the volume icon on the taskbar and click Open Volume Mixer to check the settings. . Check the volume setting in the audio mixer. . If you are using external speakers, check the volume settings on the speakers and the connections between the speakers and your computer. . Make sure the correct driver software is installed. Follow these steps: 1 Click Start and Control Panel. 2 Click System and Maintenance. 3 Click System. Troubleshooting > Optical Discs n156 N 4 Click Device Manager in the left pane. The Device Manager window appears with a listing of your computer's hardware devices. If an "X" or an exclamation point appears on the listed device, you may need to enable the device or reinstall the driver software. 5 Double-click the optical disc drive device to open a list of the optical disc drives of your computer. 6 Double-click the desired drive. You can confirm the driver software by selecting the Driver tab, and clicking Driver Details. 7 Click OK to close the window. . Make sure an adhesive label is not affixed to a disc. Adhesive labels can come off while the disc is in the optical disc drive and damage the drive or cause it to malfunction. . If a region code warning appears, the disc may be incompatible with the optical disc drive. Check the package to make sure the region code is compatible with the optical disc drive. . If you notice condensation on your computer, do not use the computer for at least one hour. Condensation can cause the computer to malfunction. . Make sure your computer is running on the AC power supply and try the disc again. Troubleshooting > Optical Discs n157 N What should I do if I cannot play Blu-ray Disc media or my computer becomes unstable during Blu-ray Disc playback? You may not be able to play some Blu-ray Disc contents on your computer, or the computer may become unstable during Blu-ray Disc playback. To play such contents normally, download and install the latest updates for the WinDVD BD using the VAIO Update. For information on how to use the VAIO Update, see Updating Your Computer (page 26). What should I do if I cannot write data to CD media? . Make sure you neither launch any software application nor allow any to launch automatically, not even a screen saver. . If you are using a CD-R/RW disc with an adhesive label affixed, replace it with one with no affixed adhesive label. Using a disc with an affixed adhesive label could cause a write error or other damage. What should I do if I cannot write data to DVD media? . Make sure you are using the correct DVD recordable media. . Check which DVD recordable format is compatible with your optical disc drive. Some brands of DVD recordable media do not work. Why can't I write data to Blu-ray Disc media? . Check if your optical disc drive supports the Blu-ray Disc writing function. . BD-R Disc media are not rewritable. You cannot add or erase data to or from the BD-R Disc media. Troubleshooting > Display n158 N Display Why did my screen go blank? . Your computer screen may go blank if the computer loses power or enters a power saving mode (Sleep or Hibernate). If the computer is in LCD (Video) Sleep mode, press any key to bring the computer back into Normal mode. See Using the Power Saving Modes (page 101) for more information. . Make sure your computer is securely plugged into a power source and turned on and the power indicator light is lit. . If your computer is using battery power, make sure the battery pack is installed properly and is charged. See Using the Battery Pack (page 18) for more information. . If the display output is directed to the external display, press the Fn+F7 keys. See Combinations and Functions with the Fn Key (page 28) for more information. What should I do if I do not see proper images or videos? . Be sure to select Highest (32 bit) for the display colors before using video/image software or starting DVD playback. Selecting any other option may prevent such software from displaying images successfully. To change the display colors, follow these steps: 1 Right-click on the desktop and select Personalize. 2 Click Display Settings. 3 Select Highest (32 bit) under Colors. . Do not change the display resolution or colors while using video/image software or playing DVDs, as it may cause unsuccessful playback/display or unstable system operations. Additionally, it is recommended you disable your screen saver before starting DVD playback. If the screen saver is enabled, it may be activated during DVD playback and prevent it from running successfully. Some screen savers have been found to even change the display resolution and colors. Troubleshooting > Display n159 N Why doesn't my screen display a video? . If the display output is directed to the external display and the external ...
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