Assessments - 3, GPA: 4.3
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Move your computer and Bluetooth devices closer to each other. . The 2.4 GHz radio frequency used by Bluetooth and wireless LAN devices is also used by other devices. Bluetooth devices incorporate technology that minimizes interference from other devices using the same wavelength, however, communication speed and connection range may be reduced. Interference from other devices may also stop communications altogether. . Connection capability is affected by distance and obstructions. You may need to move your computer away from obstacles or closer to the device to which it is connected. . Identify and remove obstacles between your computer and the device to which it is connected. . Large files may occasionally be corrupted during continuous transfer due to limitations of the Bluetooth standard and electromagnetic interference in the environment. Why can't I use the services supported by the connected Bluetooth device? Connection is only possible for services also supported by the computer with the Bluetooth function. For more details, search for Bluetooth information using Windows Help and Support. To open Windows Help and Support, click Start and Help and Support. Can I use a device with Bluetooth technology on airplanes? With Bluetooth technology, your computer transmits a radio frequency of 2.4 GHz. Sensitive locations, such as hospitals and airplanes, may have restrictions on use of Bluetooth devices to avoid radio interference. Check with facility staff to see if use of the Bluetooth function on the computer is permitted. 196nNTroubleshooting Why can't I use the Bluetooth function when I log onto my computer as a user with a standard user account? The Bluetooth function may not be available to a user with a standard user account on your computer. Log onto the computer as a user with administrative rights. Why can't I use the Bluetooth devices when I switch users? If you switch users without logging off your system, the Bluetooth devices will not work. Be sure to log off before switching users. To log off your system, click Start, the arrow next to the Lock button, and Log Off. Why can't I exchange business card data with a mobile phone? The business card exchange function is not supported. 197nNTroubleshooting Optical Discs Why does my computer freeze when I try to read a disc? The disc that your computer is trying to read may be dirty or damaged. Follow these steps: 1 Press the Ctrl+Alt+Delete keys and click the arrow next to the Shut down button and Restart to restart the computer. 2 Remove the disc from the optical disc drive. 3 Check the disc for dirt or damage. If you need to clean the disc, see Handling Discs (page 167) for instructions. What should I do if the drive tray does not open? . Make sure your computer is on. . If the power supply to the optical disc drive is disabled by the VAIO Power Management, the substitute drive eject button on the optical disc drive will not work. Use the drive eject button located on the right front edge of the computer. It will take a while to eject the drive tray if the optical disc drive is not powered. . If the drive eject button does not work, click Start and Computer, right-click the optical disc drive icon, and select Eject. . If none of the above options work, insert a thin, straight object (such as a paper clip) in the manual eject hole near the substitute drive eject button. . Try restarting your computer. 198nNTroubleshooting What should I do if I cannot play a disc properly on my computer? . Make sure the disc is inserted into the optical disc drive with the label facing upward. . Make sure the necessary program(s) is installed according to the manufacturer's instructions. . Blu-ray Disc playback on a connected external display may be interrupted, depending on the type or bit rate of the video. You may be able to solve this problem by lowering the screen resolution of the display. Follow the steps in Why doesn't my screen display a video? (page 203) to change the screen resolution. . If a disc is dirty or damaged, your computer will stop responding. Follow these steps: 1 Press the Ctrl+Alt+Delete keys and click the arrow next to the Shut down button and Restart to restart the computer. 2 Remove the disc from the optical disc drive. 3 Check the disc for dirt or damage. If you need to clean the disc, see Handling Discs (page 167) for instructions. . If you are playing a disc and cannot hear sound, do any of the following: . The volume may have been turned off by the muting button. Press the button once again. . The volume may have been minimized by the volume down button. Press the volume up button several times or keep pressing the button 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 you...
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