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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 change to the settings disables the bidirectional communication functions of the printer, such as data transfer, status monitoring, and remote panel. 155155nN Troubleshooting 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. 156156nN Troubleshooting Mouse What should I do if my computer does not recognize my mouse? . Make sure your mouse is securely plugged into the port. . Restart your computer with your mouse connected. What should I do if the pointer does not move when I use my mouse? . Make sure another mouse is not connected. . If the pointer does not move while a software application is running, press the Alt+F4 keys to close the application window. . If the Alt+F4 keys do not work, click Start, the arrow next to the Lock button, and Restart to restart your computer. . If your computer does not restart, press the Ctrl+Alt+Delete keys and click the arrow next to the Shut down button and Restart. If the Windows Security window appears, click Restart. . If this procedure does not work, press and hold the power button until the computer turns off. ! Turning off your computer with the power button may cause loss of unsaved data. 157157nN Troubleshooting Speakers What should I do if my external speakers do not work? . 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. 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. . Make sure the speaker volume is turned up loud enough and the audio option is enabled. . The Fn+F2 keys may have been pressed. Press them once again. . Check the Windows volume controls by clicking the volume icon on the taskbar. What should I do if I do not hear microphone or line-in sound from my HDMI-compatible TV? This Q & A entry applies to models with the NVIDIA video controller only. Your computer is not capable of outputting audio signals from the microphone jack directly through the HDMI port. Save the audio data first to an audio file, and then play it back to output through the HDMI port. 158158nN Troubleshooting Touch Pad What should I do if the touch pad does not work? . You may have disabled the touch pad without connecting a mouse to your computer. See Using the Touch Pad (page 32). . Make sure that a mouse is not connected to your computer. . If the pointer does not move while a software application is running, press the Alt+F4 keys to close the application window. . If the Alt+F4 keys do not work, click Start, the arrow next to the Lock button, and Restart to restart your computer. . If your computer does not restart, press the Ctrl+Alt+Delete keys and click the arrow next to the Shut down button and Restart. If the Windows Security window appears, click Restart. . If this procedure does not work, press and hold the power button until the computer turns off. ! Turning off your computer with the power button may cause loss of unsaved data. 159159nN Troubleshooting Keyboard What should I do if the keyboard configuration is wrong? The language layout of your computer's keyboard is labeled on the packaging box. If you choose a different regional keyboard when you complete the Windows setup, the key configuration will be mismatched. To change the keyboard configuration, follow these steps: 1 Click Start and Control Panel 2 Click Clock, Language, and Region, and click Regional and Language Options. 3 Change the settings as desired. What should I do if I cannot enter certain characters with the keyboard? If you cannot enter U, I, O, P, J, K, L, M, and so on, the Num Lk key may be activated. Check that the Num lock indicator is off. If the Num lock indicator is on, press the Num Lk key to turn it off before entering these characters. 160160nN Troubleshooting Floppy Disks Why doesn't the Safely Remove Hardware icon appear on the taskbar when the drive is connected? Your computer does not recognize the floppy disk drive. First, make sure the USB cabl...
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