Windows 10: Wifi Adapter has disappeared NOT after Windows 10 upgrade

Discus and support Wifi Adapter has disappeared NOT after Windows 10 upgrade in Windows 10 Network and Sharing to solve the problem; Hi, My Wifi adapter has disappeared on my new Lenovo C50 all in one computer. I have had the computer about 2 months and it has been Windows 10 the... Discussion in 'Windows 10 Network and Sharing' started by JozefMaliar, Sep 1, 2020.

  1. Wifi Adapter has disappeared NOT after Windows 10 upgrade


    Hi,

    My Wifi adapter has disappeared on my new Lenovo C50 all in one computer. I have had the computer about 2 months and it has been Windows 10 the whole time and has functioned generally well, although the Wireless connection has occasionally stopped and showed no wireless connections in range when there are several. Usually restarting has sorted it out, but not this time. I guess the computer may well have been Win 7 or 8 before I purchased it from a high street retailer - PC World but this is not an issue that has come about immediately after a Windows 10 upgrade.

    There was a Windows update KB3140741 around the time the adapter disappeared today, might be coincidence. I've tried uninstalling that update but it won't let me.

    I've updated the driver for the wireless adapter Realtek PCIe GBE Family Controller in the device manager and it's now completely up to date. The properties say it's functioning correctly but it still doesn't appear at all when I go into Network and Internet, VPN, Change Adapter Options. All that is there is the bluetooth network connection and Ethernet which is what I am using whilst I fix this.

    I have also tried the two solutions on this site http://www.drivethelife.com/windows-10/fix-no-wifi-available-after-windows-10-update.html which is to download some software and to attempt to amend the registry. The software states that the driver for the wireless adapter is up to date, and the registry entry it suggests to delete doesn't exist, so both of those options have drawn blanks.

    I've spent ages on the internet looking for an answer so I hope you can help as nothing seems to have worked.

    :)
     
    JozefMaliar, Sep 1, 2020
    #1
  2. WG9
    WG9 Win User

    Wifi adapter disappears - goes 'hidden'


    Running Windows 10 on an Acer laptop. Over the past month, the wifi connection dropped without explanation/warning.

    First time, the adapter was visible in Device Manager (with a yellow triangle next to it). An interent search found the suggestion to uninstall it and restart. That worked.

    Today, the connection dropped again. In Device Manager at first I could not see the wifi adapter listed. I clicked to see hidden devices and found the adapter and the Bluetooth (which I had not noticed was missing).

    I again uninstalled, restarted, and both the wifi and bluetooth have returned.

    Anyone any ideas as to what is happening, why it's happening, and what I need to do, please?

    I have attached a screenshot of the DM windows as it is now, showing the wifi adapter name, etc.

    Thanks very much

    WG
     
  3. Wifi adapter not appearing in Device manger after Win 10 upgrade.

    To which Windows 10 version did the upgrade go to?

    I am asking because on one of my Laptops my WiFi adapter completely disappeared from Device Manager. I did however get this issue resolved eventually.

    2 things to try:
    1. Disable Fast Startup from advanced power options
    2. Then uninstall ALL network drivers including BlueTooth
    3. Finally restart computer and see if your WiFi comes back.

    It could also be that the WiFi adapter somehow entered a deep sleep mode and thus can't be found anywhere. Try fiddling with other power options and also BIOS options if you can get into one. Wifi Adapter has disappeared NOT after Windows 10 upgrade :)
     
    slicendice, Sep 1, 2020
    #3
  4. kentosan Win User

    Wifi Adapter has disappeared NOT after Windows 10 upgrade

    Wifi adapter disappears after sleep

    Thanks for replying.

    @Spirit MS MVP - This is the reason wifi is disabled when the computer goes into sleep mode. When I untick the "Allow computer to turn off the device to save power" and place the computer into sleep mode, the wifi adapter disappears. If i recheck it, and
    put the computer to sleep, the wifi adapter does not get uninstalled.

    @Andre - First solution does not work because the adapter does not exist and is not listed in the Device Manager.

    Second solution doesnt work because the adapter is not listed in Troubleshooting. I tried troubleshooting all adapters and nothing was returned.

    Third solution again does not work because the adapter is not there to uninstall.

    The wireless driver/adapter disappears after restarting from sleep mode when the adapter's ""Allow computer to turn off device to save power" setting is unchecked.
     
    kentosan, Sep 1, 2020
    #4
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Wifi Adapter has disappeared NOT after Windows 10 upgrade

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