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Sony VPCJ2 What should I do if my computer cannot connect to a wireless LAN access point?

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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 need to place your computer away from obstructions

or move any access point you may be using closer to the computer.

❑Make sure 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 4. Customer Information Center 5. In Store Service & Support (available in USA only) Ergonomic Considerations Page Getting Started Page Front Back Right Left About the Indicator Lights Setting Up Your Computer Connecting a Power Source To connect the AC adapter Page Shutting Down Your Computer Safely To shut down your computer Using the Power Saving Mode Using Sleep Mode To activate Sleep mode To return to Normal mode To change the Sleep mode settings 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 Page Using the Wireless Keyboard Using the Keyboard A B C D E Page Page To connect the wireless keyboard Page Page Using the Wireless Mouse Using the Mouse To connect the wireless mouse Adjusting the Mouse Functions Using the Touch Screen Page Page Displaying the On-screen Keyboard Notes on Using the Touch Screen Using Special-function Buttons Using Special-function Buttons Your computer is equipped with special buttons to help you use spec ific functions of the computer. 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 Page Playing Discs To play a disc Copying Files to Discs To copy files to a disc 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 Communicating with Another BLUETOOTH Device To communicate with another BLUETOOTH device Page Notes on Using the BLUETOOTH Function Page Page Connecting External Speakers or Headphones To connect external speakers Connecting an External Microphone To connect an external microphone Connecting a USB Device To connect a USB device Notes on connecting a USB device Page 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 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 Cell Mouse Headphones Care and Maintenance Information Handling Your Computer Page Handling the LCD Screen/Touch Screen Using the Power Source Page Page 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 mode? To restore your computer to normal mode What should I do if my game software does not work or it keeps crashing? 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? Parti tion How can I create a hard disk partition? 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? What should I do if captured images contain dropped frames and audio interruptions? What should I do if captured images flicker? 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? Page Display Why did my screen go blank? What should I do if I do not see proper images or videos? What should I do if some items do not fit on the computer screen? Why doesn't my screen display a video? 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? Mouse What should I do if my computer does not recognize my mouse? What should I do if the pointer does not move when I use my mouse? 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 Screen What should I do if the touch screen does not work? What should I do if I cannot tap on the exact spot that I intend on the touch screen? 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? What should I do if my computer does not recognize my keyboard? Floppy Disks What should I do if I cannot write data to a floppy disk? Audio/Video How do I turn off the Windows startup sound? How do I change the sound output device? Page How do I turn off sound along with the LCD backlight using the DISPLAY OFF button? "Memory Stick" Peripherals What should I do if I cannot connect a USB device? Trademarks Page Page Notice