Wireless Adapter Suddenly Missing (Windows 7, 64)

Sony Vaio, running Windows 7, 64-bit suddenly has no wi-fi connectivity. Tray icon says "No connections are available". 

What I have tried:

1. Reboot

2. Toogle wireless power switch

3. Uninstalled network adapter drivers

4. Made sure WLAN Services is running

Clues:

1. When I toggle the power switch back to on, I see the bluetooth logo appear momentarily in the tray. 

2. I do not see an 802.11 adapter listed in device manager

Does this mean my Broadcom wireless card has died? Wouldn't that take bluetooth with it? Any other thoughts on how I can get my internet connection again?

 

Question Info


Last updated August 28, 2018 Views 8,805 Applies to:

Hello,

Welcome to Microsoft Community Forum.

As per the description, I understand that your computer lost Wi-Fi connectivity all of a sudden and network icon at the taskbar says “No connections available”. You tried a number of troubleshooting steps like rebooting, toggling wireless power switch, uninstalling network adapter driver, checking WLAN service etc, but none of them helped you enough to get this problem resolved.

I would appreciate if you can provide us the following information to help us understand the issue better.

  1. Were you able to install the network adapter driver after uninstalling?
  2. Were you able to see 802.11 adapter in device manager earlier before uninstalling network adapter driver?

Looks like the network adapter driver failed to download and install automatically after uninstalling. If that is the case I would have you download and install the wireless adapter driver manually from adapter manufacturer website and check.

If issue persists, let’s follow the Methods below to check if that works:

First, I would suggest you to run Windows in-built network adapter troubleshooter and check if it reports any error and fixes them.

How do I fix network adapter problems?

http://windows.microsoft.com/en-us/windows/fix-network-adapter-problems#1TC=windows-7

If network troubleshooter does not help try other suggestions in the article like disabling and re-enabling network adapter, resetting the network adapter, uninstalling and reinstalling the network adapter driver again.

You may also refer the article below to check if the computer has all the network settings at its place.  

Wired and wireless network problems.

http://windows.microsoft.com/en-us/windows/network-connection-problem-help#network-problems=windows-7&v1h=win81tab1&v2h=win7tab5&v3h=winvistatab1&v4h=winxptab1

Hope this helps. Please let us know the results, feel free to write us back for any further assistance, we’ll be glad to assist you.

Regards,
Mann Manohar

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Mann,

The adapter was not listed. I uninstalled the ethernet adapter and re-installed it, but that's all I could do because the 802.11 device was not listed.

I went to the OEM site and downloaded the latest drivers they post there. No luck. I then went to Intel's website, as another online user suggested, and downloaded the driver for the Intel WiFi Link 5100 agn. But the version they post won't install unless you can uninstall the old driver, which I can't do because I can't see the adapter in device manager.

I would run the built-in diagnostics if there was something to run them on. If I just run the general internet connection diagnostics, it just tells me that a network cable is unplugged. Presumably because it can't see the wireless card and, so, assumes I connect only by cable.

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Hello,

Thank you for your reply, appreciate the time taken by you in keeping us updated on the status of the issue.

  1. Do you use external Bluetooth modem to connect to wi-fi? If yes what is the make and model of the network adapter?
  2. Have you checked plugging the 802.11 device to a different port?
  3. What happens when you unplug and re-plug the network adapter (dongle) to the computer? Do you get any error message?

Looks like 802.11 (external network adapter) device driver is missing and causing this problem. I would suggest you to unplug and re-plug the external network adapter (modem) and check if it tries to install the modem driver automatically. If it fails to install the driver automatically, I would recommend you to look for 802.11 network adapter driver on their website and install manually.

Hope this works. Please let us know the results. Feel free to write us back for any further assistance, we’ll be glad to assist you.

Regards,
Mann Manohar

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It was the card. I opened up the laptop, replaced the card, and was then able to see it in device manager. I updated the driver, and things are now working fine. 

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Glad to hear that your issue is resolved. Feel free to write us back if you have any other query or for any further assistance with Windows, we'll be glad to assist you.

Regards,
Mann Manohar

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