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191nNTroubleshooting 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. . Stop using the keyboard. . 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. Note the possibility that some brands of DVD recordable media do not work. What should I do if I cannot play discs? The optical disc drive on your computer may have been disabled in the BIOS setup screen. Follow the steps and the tip in Disabling Built-in Devices (page 138) to enable the drive. 192nNTroubleshooting 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 131) for more information. . Make sure your computer is securely plugged into a power source and turned on. Make sure the power indicator shows the power is on. . If your computer is using battery power, make sure the battery pack is installed properly and is charged. See Using the Battery Pack (page 24) for more information. . If the display mode is set to the external display, press the Fn+F7 keys. See Combinations and Functions with the Fn Key (page 33) for more information. 193nNTroubleshooting Why doesn't my screen display a video? . If the external display is selected for the display output and the external display is disconnected, you cannot display a video on your computer screen. Stop video playback, change the display output to the computer screen, and then restart video playback. See Selecting Display Modes (page 91). Alternatively, you can press the Fn+F7 keys to change the display output. See Combinations and Functions with the Fn Key (page 33) for more information. . The video memory of your computer may be insufficient for displaying high resolution videos. In this case, lower the resolution of the LCD screen. To change the screen resolution, follow these steps: 1 Right-click the desktop and select Personalize. 2 Click Display Settings. 3 Move the slider under Resolution to the left to reduce or to the right to increase the screen resolution. . You can confirm the value of the total available graphics memory and video memory. Right-click on the desktop, select Personalize, and click Display Settings, Advanced Settings, and the Adaptor tab. The value may be displayed differently from the actual memory on your computer. What should I do if my screen...
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