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Sony VPCF2 Series What should I do if my computer cannot connect to a wireless LAN access point?

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Troubleshooting >

Networking (LAN/Wireless LAN)

What should I do if my computer cannot connect to a wireless LAN access point?

❑Connection capability is affected by distance and obstructions. You may need to move your computer away from

obstructions or closer to any access point you may be using.

❑Make sure the WIRELESS switch is on and the WIRELESS indicator light is lit on your computer.

❑Make sure power to the access point is on.

❑Follow these steps to check the settings:

1Click Start and Control Panel.

2Click View network status and tasks under Network and Internet.

3Click Connect to a network to confirm that your access point is selected.

❑Make sure the encryption key is correct.

❑Make sure Maximum Performance is select ed for Wireless Adapter Settin gs in the Power Options window. Selecting

any other option may result in a communication failure. To change the settings, follow these steps:

1Click Start and Control Panel.

2Click System and Security and Power Options.

3Click Change plan settings for the current power plan.

4Click Change advanced power settings.

5Double-click Wireless Adapter Settings and Power Saving Mode.

6Select Maximum Performance from the drop-down list.

Contents

Main Contents Page Before Use How to find specifications Finding More about Your VAIO Computer 1. Printed Documentation 2. On-screen Documentation 3. Support Web Sites Ergonomic Considerations Page Getting Started Page Front Page Right Left Back/Bottom About the Indicator Lights About the Indicator Lights Your computer is equipped with the following indicator lights: Indicator Functions Connecting a Power Source Using the AC Adapter To use the AC adapter Page Using the Battery Pack Installing/Removing the Battery Pack To install the battery pack Page To remove the battery pack Charging the Battery Pack To charge the battery pack Page Checking the Battery Charge Capacity To check the battery charge capacity Extending the Battery Life Shutting Down Your Computer Safely To shut down your computer Using the Power Saving Modes Using Sleep Mode Using Hibernate Mode To activate Hibernate mode To return to Normal mode Keeping Your Computer in Optimum Condition Updating Your Computer Using the Antivirus Software for Your Computer Using the VAIO Care To launch the VAIO Care Using Your VAIO Computer Using the Keyboard Combinations and Functions with the Fn Key Using the Keyboard Combination/Feature Function Changing the Backlit Keyboard Settings To change the backlit keyboard settings Using the Touch Pad Using the Touch Pad You can point to, select, drag, and scroll objects on the screen us ing the touch pad. Using Special-function Buttons Touch Sensor Buttons Using Special-function Buttons Function Buttons Special-function button Functions Using the Quick Web Access Function Activating the Quick Web Access Function To activate the Quick Web Access function Exiting the Quick Web Access Function Notes on Using the Quick Web Access Function Using the Built-in Camera To make a video call using Windows Live Messenger To display images from the built-in camera Using the Optical Disc Drive To insert a disc Page Using the Optical Disc Drive Supported Discs Using the Optical Disc Drive Notes on Using the Optical Disc Drive Notes on writing data to a disc Notes on playing discs Notes on region codes Page Playing Discs To play a disc Copying Files to Discs To copy files to a disc Using the 3D Function What you can do with the 3D function Using "Memory Stick" Before You Use "Memory Stick" Inserting and Removing "Memory Stick" To insert "Memory Stick" Page To remove "Memory Stick" Formatting "Memory Stick" To format "Memory Stick" Page Notes on Using "Memory Stick" Using Other Modules / Memory Cards Using the SD Memory Card Before you use the SD memory card To insert an SD memory card To remove an SD memory card Notes on Using Memory Cards General notes on using the memory card Notes on using the SD memory card Using the Internet Using the Network (LAN) Using the Wireless LAN Notes on Using the Wireless LAN Function General notes on using the wireless LAN function Note on the data encryption Starting Wireless LAN Communications To start wireless LAN communications Stopping Wireless LAN Communications To stop wireless LAN communications Using the BLUETOOTH Function BLUETOOTH Security Page To communicate with another BLUETOOTH device Page Notes on Using the BLUETOOTH Function Page Using Peripheral Devices Connecting External Speakers or Headphones To connect external speakers Connecting an External Display Connecting a Computer Display or a Projector To connect a computer display or a projector Page Connecting a TV with an HDMI Input Port To connect a TV to your computer Page Playing Blu-ray 3D Disc media To play Blu-ray 3D Disc media To connect a high-quality digital sound output device between your computer and a TV Selecting Display Modes To select a display mode with the Fn+F7 keys To select a display mode from the display settings Using the Multiple Monitors Function To use the Multiple Monitors function Connecting an External Microphone To connect an external microphone Connecting a USB Device To connect a USB device Notes on connecting a USB device Connecting an i.LINK Device Notes on connecting i.LINK devices Connecting a Digital Video Camcorder To connect a digital video camcorder Customizing Your VAIO Computer Setting the Password Setting the Power-on Password To add the power-on password (machine password) To add the power-on password (user password) To change or remove the power-on password (machine password) To change or remove the power-on password (user password) Setting the Windows Password To add the Windows password To change the Windows password To remove the Windows password Using the VAIO Control Center To use the VAIO Control Center Using S-FORCE Front Surround 3D To enable S-FORCE Front Surround 3D Using the VAIO Power Management Selecting a Power Plan To select a power plan To change the power plan settings Changing the Display Language To install a language pack To change the display language Upgrading Your VAIO Computer Adding and Removing Memory Notes on adding/removing memory modules Page Removing and Installing a Memory Module To change or add a memory module Page Page Viewing the Amount of Memory To view the amount of memory Precautions Safety I nformatio n Computer Power Source Battery Pack Headphones Care and Maintenance Information Handling Your Computer Page Handling the LCD Screen Using the Power Source Page Page Using the Battery Pack Handling "Memory Stick" Handling the Built-in Storage Device To avoid damaging your built-in storage device Troubleshooting Page Computer Operations What should I do if my computer does not start? What should I do if the green power indicator light turns on but my screen remains blank? What should I do if my computer or software stops responding? Why doesn't my computer enter Sleep or Hibernate mode? To restore your computer to Normal mode What should I do if the charge indicator light is blinking fast and my computer does not start? Page Page System Update / Security How can I find important updates for my computer? How do I schedule the installation of Windows updates to my computer? Recovery / Recovery Media How can I create Recovery Media? How can I restore my computer system to its factory default settings? How can I reinstall the original software and drivers? How do I check the volume of the recovery area? How do I reduce the volume of the recovery area? Parti tion How can I create a hard disk partition? Battery Pack Page Built-in Camera Why does the viewfinder show no images or poor-quality images? Why is the video input from the built-in camera suspended for a few seconds? Why are captured images poor in quality? Page Networking (LAN/Wireless LAN) What should I do if the VAIO Smart Network icon is not displayed on the taskbar? What should I do if my computer cannot connect to a wireless LAN access point? What should I do if I cannot access the Internet? Why is the data transfer speed slow? How do I avoid data transfer interruptions? What are channels? Why does the network connection stop when I change the encryption key? BLUETOOTH Technology What should I do if other BLUETOOTH devices cannot find my computer? What should I do if I cannot find the BLUETOOTH device I want to communicate with? What should I do if other BLUETOOTH devices cannot connect to my computer? Why is my BLUETOOTH connection slow? Page Optical Discs Why does my computer freeze when I try to read a disc? What should I do if the drive tray does not open? What should I do if I cannot play a disc properly on my computer? Page What should I do if I cannot write data to CD media? What should I do if I cannot write data to DVD media? Page Display Why did my screen go blank? What should I do if I do not see proper images or videos? Page Page Why doesn't my screen display a video? What should I do if my screen is dark? Page Printing What should I do if I cannot print a document? Microphone What should I do if my microphone does not work? How can I prevent microphone feedback? Speakers What should I do if I do not hear sound from the built-in speakers? What should I do if my external speakers do not work? Touch Pad What should I do if the touch pad does not work? Keyboard What should I do if the keyboard configuration is wrong? What should I do if I cannot use the numeric keypad to enter numbers? Floppy Disks What should I do if I cannot write data to a floppy disk? Audio/Video What should I do if I cannot use my digital video camcorder? How do I turn off the Windows startup sound? How do I change the sound output device? Page How do I output the Dolby Digital or DTS sound through an S/PDIF-compatible device? "Memory Stick" Peripherals What should I do if I cannot connect a USB device? About the International ENERGY STAR(R) Program Trademarks Page Notice