Article ID : S700023601 / Last Modified : 27/06/2019

How to troubleshoot Wireless Network connection issues

    Follow the procedure below to troubleshoot wireless connection issues, including dropped connections, failed connections or low signal strength.

    difficulty rating Difficulty rating:
    Intermediate
    time needed Time needed:
    15-30 minutes activity

    NOTE: Because each of these steps represents a possible solution to this issue, try connecting to the wireless network and view Web sites using your internet browser after completing each step.

    Check the physical Wireless switch

    Verify the physical wireless switch is set to ON. Refer to the user's manual for instructions.
    Wireless Switch
    figure 1 - wireless switch

    Check the wireless utility

    Look in the taskbar for the wireless icon, and make sure it is switched on.  Depending on your VAIO model, a different wireless utility may be installed.  On most VAIO models, Wireless networking is either managed by Wireless Device Switch or by VAIO Smart Network.

    Wireless device switch icon - Wireless Device Switch information
    VAIO Smart Network icon - VAIO Smart Network information

    For a typical configuration, the option "Enable 2.4 GHz Wireless LAN" should be selected.
    If Bluetooth devices are not used, we recommend to leave it disabled.

    Driver and utility reinstallation / updates

    Reinstall the Wireless Lan Utility and Driver using the VAIO Recovery software.

    NOTES:
    If model-specific information is required to use the VAIO Recovery software, refer to the operating instructions supplied with the product.

    If available, download and install wireless Lan-related updates from our downloads section.

    Test the connection with another computer

    If possible, test another computer on the wireless network.

    NOTE: If another computer is successful, this will ensure the problem is not with the ISP, modem or router.

    Turn off the power management setting for the WLAN adapter.

    Access Device Manager
    In Network Adapters, locate the Wireless Network Adapter.
    Right-click and select Properties
    select the Power Management tab
    Unselect the option 'Allow the computer to turn off this device to save power' and click OK
    Wireless Adapter Power Management
    figure 3 - Wireless adapter properties

    Repair the wireless connection.

    Click on Start - move the mouse pointer over Network, right-click and select Properties
    At the left side of the Network and Sharing Center, click on the task Diagnose and Repair
    Network and Sharing Center
    figure 4 - Vista Network and Sharing Center


    Disable Internet Protocol Version 6 (TCP/IPv6).

    In the Network and Sharing Center, click on View status for the wireless network connection.
    In the connection status windows, click on Properties.
    Unselect the option Internet Protocol Version 6 (TCP/IPv6) and click OK.
    Disable IPv6
    figure 5 - disable IPv6

    Obtain IP and DNS addresses automatically

    In the Network and Sharing Center, click on View status for the wireless network connection.
    In the connection status windows, click on Properties.
    Double click on Internet Protocol Version 4 (TCP/IP4).

    Ensure Obtain an IP address automatically & Obtain DNS Server address automically is selected.

    Image

    Test the connection in safe mode with networking

    Boot the computer into safe mode with networking and test the wireless connection in Internet Explorer.

    NOTE: If the connection works in safe mode, the issue is likely caused by anti-virus or anti-spyware software. Configure the software properly per the manufacturer's instructions.

    WARNING: If anti-virus or anti-spyware software has been removed or disabled to troubleshoot the issue, Sony recommends enabling or reinstalling it to prevent exposure to malicious software. Once the software is enabled or reinstalled, configure it properly per the manufacturer's instructions to allow the Internet or network connection to work correctly.

    Verify the router's configuration

    Check the WAN IP address of the router as per the manufacturer's instructions.

    NOTE: If the router is not getting a WAN IP address, the issue is likely caused by a problem with the ISP.

    WARNING: There is a risk of data loss. If a router has been specifically configured (PPPoe, DSL, MAC address filtering, security, etc...), the settings will be removed by resetting the router and it will have to be reconfigured.

    Reset the router and/or modem per the manufacturer's instructions.
    If available, install a firmware update for the router and/or modem. Check the manufacturer's Web site for updates and instructions.

    Wireless interference

    Check to determine if wireless interference is causing the issue.  Make sure there is no other electrical equipment nearby the wireless router or the VAIO.