Windows 10: Suddenly no Wi-Fi connection is available Solved

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  1.    24 Feb 2018 #1

    Suddenly no Wi-Fi connection is available


    I have an brand new Lenovo Yoga 920. Picked it up yesterday and it was working perfectly except after a restart this afternoon where it shows "Not connected - No connections are available." When I go to Network and Internet settings, there is no Wi-Fi option to the left under "Network and Internet". I can search for it, and select "Turn wireless devices on and off" but that just brings up Airplane mode. The network troubleshooter says everything is working normally. Its as if there is an external Wi-Fi switch turned off and I don't believe this device has one. Its not my router because its working perfectly with my desktop

    Just prior to restart McAfee (30 day trial) was having an issue with a file it thought was suspicious. It was a legitimate file so I released it from quarantine and a few minutes later restarted. I mention this just to let you know what happened prior to the issue, but I don't think McAfee had anything to do with it.

    Update: I checked in Device Manager and there is no mention of the Qualcomm Atheros wireless adapter under "Network adapters." I think the Yoga 920 is supposed to have this one. In fact there's no mention of any Wi-Fi adapters at all, only Bluetooth and 8 WAN Miniports. Scan for hardware changes doesn't fix this.
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  2. Posts : 2,714
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       25 Feb 2018 #2

    If Airplane mode has been turned on, wifi will be disabled. Try clicking on airplane mode once and see if you then have connections available...
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  3.    25 Feb 2018 #3

    dmholt57 said: View Post
    If Airplane mode has been turned on, wifi will be disabled. Try clicking on airplane mode once and see if you then have connections available...
    Thanks, but Airplane mode is not on.
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  4. Posts : 2,714
    17134.112 Pro 17134.112 Home
       25 Feb 2018 #4

    Does the adapter show to be enabled? Open a command prompt and type ipconfig /all then press enter
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  5.    25 Feb 2018 #5

    visibility said: View Post
    Update: I checked in Device Manager and there is no mention of the Qualcomm Atheros wireless adapter under "Network adapters." I think the Yoga 920 is supposed to have this one. In fact there's no mention of any Wi-Fi adapters at all, only Bluetooth and 8 WAN Miniports. Scan for hardware changes doesn't fix this.
    In Device Manager check View->Show Hidden Devices just to make sure the adapter isn't there.

    If it's not, then boot into BIOS/UEFI setup and see if there are any relevant WiFi settings.

    If not, then I would try booting into a Ubuntu live USB drive to see if the card is detected in Linux - Create a bootable USB stick on Windows | Ubuntu tutorials .
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  6.    25 Feb 2018 #6

    dmholt57 said: View Post
    Does the adapter show to be enabled? Open a command prompt and type ipconfig /all then press enter
    The adapter doesn't show at all - its simply not there. ipconfig /all shows only the bluetooth device.
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  7. Posts : 2,714
    17134.112 Pro 17134.112 Home
       25 Feb 2018 #7

    Reboot and see if Windows finds it and loads the drivers, is fast startup turned on in advanced power options?
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  •    25 Feb 2018 #8

    PolarNettles said: View Post
    In Device Manager check View->Show Hidden Devices just to make sure the adapter isn't there.

    If it's not, then boot into BIOS/UEFI setup and see if there are any relevant WiFi settings.

    If not, then I would try booting into a Ubuntu live USB drive to see if the card is detected in Linux - Create a bootable USB stick on Windows | Ubuntu tutorials .
    Thanks for that. Show hidden devices brought up quite a few more including a Microsoft Wi-Fi Firect adapter and the aforementioned Qualcomm Wireless adapter. Not sure why the latter is hidden.

    Here's a pic:

    Click image for larger version. 

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  •    25 Feb 2018 #9

    If you double-click the hidden device it should tell you what's wrong with it.

    Click image for larger version. 

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  •    25 Feb 2018 #10

    PolarNettles said: View Post
    If you double-click the hidden device it should tell you what's wrong with it.
    Okay, I did that and obtained exactly the same error as shown in your image - error 45 device not connected. The issue is this is a brand new laptop and I wouldn't know how to even open it. Moreover, how did it suddenly become disconnected when it was working fine this morning? The adapter may well be soldered to the motherboard as all the other parts are.

    Should I try uninstalling and rescanning for hardware? Should I be returning the machine?
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