Article ID : 00010732 / Last Modified : 06/02/2015

How to troubleshoot a wireless connection issue.

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

    NOTE: Because each of these steps represents a possible solution to this issue, try connecting to the wireless network  and view webites using the Internet Explorer® browser after completing each step.

    1. Verify the physical wireless switch is turned on. Refer to the user's manual for instructions.
    2. Turn on the WLAN adapter using the Wireless Device Switch utility .
    3. Configure the WLAN autoconfig service to start automatically .
    4. Reinstall the Wireless Device Switch software using the VAIO Recovery software.


      • 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 a Wireless Device Switch update.
    5. Reinstall the original wireless adapter driver. Uninstall the driver from device manager  and reinstall it from the VAIO Recovery software.
    6. Check for available driver update for the wireless LAN adapter.
    7. 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.

    8. Repair the wireless connection .
    9. Disable Internet Protocol Version 6 (TCP/IPv6) .
    10. Boot the computer into safe mode  and test the wireless connection in the Internet Explorer browser.

      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.

    11. 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 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.

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