WIFI 6 (Mediatek MT7921) disconnects randomly

Anonymous
2022-04-13T15:55:34+00:00

I just finished building a new pc and installed all the appropriate drivers and software. I have a WIFI 6 router which I have had for a while now and never had any issues with and the motherboard I am using is the ASUS TUF GAMING B550-PLUS WIFI II AM4 AMD B550 SATA 6Gb/s ATX AMD Motherboard. It utilizes the Mediatek MT7921 WIFI card.

The WIFI will randomly disconnect but it says its still connected. Oddly enough I can still load Google and Youtube but nothing else and even then that is intermittent and extremely slow.

Drivers: Ive tried updating, rolling back, deleting and fresh install. no dice

Settings: Ive tried disabling IPV6, Changing from AX to AC to N, etc, Disabled the Bluetooth since its the same adapter. no dice.

Ive even checked to see on another device if my pc is connected to my router while its in this disconnected state and it shows that its connected to my router but it will not connect properly to the internet. I have not had this issue with any other device on my network so I am to conclude that it is most likely to do with this new pc and this Mediatek WIFI Adapter.

Any and all help is greatly appreciated.

Windows for home | Windows 10 | Internet and connectivity

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  1. Anonymous
    2024-01-22T00:30:33+00:00

    From Ok-Painter-5982 https://www.reddit.com/r/GamingLaptops/comments/y0tsae/comment/keul6ci/?utm_source=reddit&utm_medium=web2x&context=3

    After searching forever for an updated driver I finally found one in the microsoft update catalog located here https://www.catalog.update.microsoft.com/Search.aspx?q=RZ616%20Wi-Fi%206E%20160MHz

    Extract the cab file, then update the driver from Device Manager, and select the folder you extracted the cab file into.

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  2. Anonymous
    2023-02-01T22:47:40+00:00

    Update: I've swapped routers, motherboards and tried every driver known to exist. My problem still persisted. i was to the point of trying a fresh install of windows but I was still looking for alternatives. I decided to try and update to windows 11 as a last ditch effort before doing a clean sweep of my system. since upgrading to windows 11 I haven't had a single WIFI failure and that was 2 weeks ago.

    If you've tried everything else it might be time to do the upgrade or do a clean install and make sure you have the appropriate drivers saved on a thumb drive. I hope this helps.

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  3. David-M 125.7K Reputation points Independent Advisor
    2022-04-15T19:28:43+00:00

    I did a test with more than one PC, and they show this behavior as well. In Device Manager, it shows the latest version, and in troubleshooter, it shows an older version. I don't believe this has anything to do with the problem. As far as I know, the version shown in Device Manager is the one that matters.

    What is the Wi-Fi signal strength on your computer?

    I see that the motherboard comes with an external antenna. Is this correct?

    Is the antenna in an open position? Away from the computer case, monitor and etc.?

    I suggest you change the Wi-Fi channel in the router settings. See if changing the channel improves the situation or fixes it.

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  4. Anonymous
    2022-04-15T18:41:40+00:00

    just did that and the troubleshooter still shows the old driver but device manager shows the correct one.

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  5. David-M 125.7K Reputation points Independent Advisor
    2022-04-15T16:58:46+00:00

    Do a clean install of the Wi-Fi driver as instructed below.

    Before starting the procedure, make sure you have the latest Wi-Fi driver installer. If you have deleted it, download it again from the Asus website.

    If you are also using the Ethernet (Cable) adapter, temporarily disconnect it during the entire procedure to prevent Windows from installing another driver automatically.

    Uninstall the current driver:

    1. Open "Device Manager" (Windows + X and select Device Manager);
    2. Expand "Network adapters";
    3. Right-click on the Wi-Fi adapter and select "Uninstall device";
    4. On the confirmation screen, check "Delete the driver software for this device" and click "Ok";
    5. Restart the PC.

    After the PC restarts, install the driver you downloaded from Asus.

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