Knowledge Base

The Wireless Network Adapter Still Cannot see any Networks or Will Not Connect


Note: The instructions in this article is for Window XP, Windows Vista and Windows 7.
Please refer to the following article for Windows 8 and Windows 10.
  1. Resolving Connection Issues on Your Wi-Fi Network for Windows 10
  2. Resolving Connection Issues on Your Wi-Fi Network for Windows 8

Table of Contents:

  1. Resolving Connection Issues
  2. Turn Off and Then Turn on All the Devices on the Network
  3. Configure the Wireless Adapter Settings for Optimal Performance

This article provides information on resolving intermittent, slow, no connection or cant get to the Internet issues on your Wi-Fi network.

1. Resolving Connection Issues

  1. Make sure the wireless switch is on. It will be either a sliding switch on the left or right side edge of the computer, a key combination or single key, look for the wireless icon .
    For more information refer to the Dell Knowledge base article, How to Turn the Wireless Antenna On and Off on a Dell Computer.

  2. Move the computer to within 3-9 feet (1-3 meters) of the wireless router.

  3. Make sure the latest driver is installed, for more information refer to Dell Knowledge Base article, How to Use the Drivers and Downloads Website.

  4. Make sure the correct network name (SSID) and key (if any) were used to create a profile.
    (For more information on how to perform these steps, click the link below that corresponds to the Operating System that is installed on the computer. Refer to the How Do I Find my Wireless Network Name and How Do I Find my Wireless Network Key sections in the Dell Knowledge Base article).

  5. Right-click the network icon in the notification area of your taskbar, and then click Troubleshoot problems and follow the instructions.

  6. Run the Fix it or follow the troubleshooting steps provided in Microsoft Knowledge Base Article, Internet Explorer cannot display the webpage.

  7. Boot to Safe Mode with Networking, if you can get to the internet in Safe Mode, then some service or program in normal mode is preventing you from getting to the internet.
    (For information on booting to Safe Mode with Networking, refer to Dell Knowledge Base article, How Do I Start My Computer in Safe Mode With Networking?).

  8. Turn off and then turn on all the devices on the network to reset and synchronize them, for more information refer to the Turn Off and Then Turn on All the Devices on the Network section.

  9. Configure the wireless adapter settings for optimal performance, for more information refer to the Configure the Wireless Adapter Settings for Optimal Performance section.

  10. Refer to Microsoft Knowledge Base Article, Wireless network connection problems in Windowsfor additional information.
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2. Turn Off and Then Turn on All the Devices on the Network

  1. Disconnect the power from the broadband modem and leave the broadband modem disconnected for at least 3 minutes.

  2. Shut down all the computers that are connected to the network.

  3. Disconnect the power from the wireless router.

  4. Verify that a network cable is connected from the Broadband Modem into the Internet or WAN port on the wireless router.

  5. Verify that no USB cables or serial cables are connected to the Broadband Modem.

  6. Connect the power to the broadband modem. Wait for at least 2 minutes for the Broadband Modem to initialize.
    (If the Modem does not establish an Internet connection successfully, unplug the Modem. Wait for at least 5 minutes, then plug in the Modem.)

  7. Connect the power to the wireless router. Wait for at least 2 minutes for the wireless router to initialize.

  8. Turn on the computer and try connecting to the Internet.
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3. Configure the Wireless Adapter Settings for Optimal Performance

Note: For information on finding which wireless adapter is installed in your computer, refer to Dell Knowledge Base Article, Which Wireless Networking Adapter is Installed in Your Dell Computer.

For Intel Wireless adapters:
  1. Click Start.

  2. Right-click Computer and then click Properties.

  3. Click Device Manager in the upper left corner.
    (If you are prompted to continue by the User Account Control, click Continue).

  4. In the Device Manager window, click the next to Network Adapters.

  5. Double-click the Intel PRO /Wireless.

  6. Click the Advanced tab.
    Note: Depending on the Wireless Adapter installed these options may not be available.

  7. In the Property: box, click Roaming Aggressiveness and select 2. Medium-Low from the drop-down menu.

  8. In the Property: box, click lick Throughput Enhancement and click to select Enable: from the drop-down menu.

  9. In the Property: box, click lick Transmit Power and click to select 5. Highest from the drop-down menu.

  10. Click OK.


For Dell Wireless adapters:
  1. Click Start.

  2. Right-click Computer and then click Properties.

  3. Click Device Manager in the upper left corner.
    (If you are prompted to continue by the User Account Control, click Continue).

  4. In the Device Manager window, click the next to Network Adapters.

  5. Double-click the Dell Wireless WLAN Card.

  6. Click the Advanced tab.
    Note: Depending on the Wireless Adapter installed these options may not be available.

  7. In the Property: box, click to highlight AP Compatibility Mode, select Broader Compatibility under Value: from the drop-down menu.

  8. In the Property: box, click to highlight Minimum Power Consumption, select Disabled under Value: from the drop-down menu.

  9. Click OK.
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Article ID: SLN127775

Last Date Modified: 07/29/2015 01:17 AM


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