MediaTek 7921 WiFi Problems


supermonkey

Member
Local time
11:21 PM
Posts
18
OS
Win 11
Hi All,

My fairly new Lenovo laptop running Win 11 (21H2 build 22000.856) has almost constant wifi problems. Almost always get the no internet icon & cannot open any websites etc. The wifi chip is a MediaTek 7921.

All my other devices are generally connecting fine.

I've not been using this laptop very much, but I'm fairly certain it was working ok & got worse, maybe after a Windows update.

Sometimes if I turn off wifi, disable the device & re-enable I get internet access for a few minutes, but it will eventually lose internet access again.

I've tried the following:
  • network reset
  • remove & reinstall driver
  • updating the driver through win update
  • manually downloading drivers from Lenovo site
  • tried to install an alternative driver for 7961 (from instructions here: MediaTek MT7921 WiFi 6 Adapter Driver causes Crashes.) despite browsing to the file, windows wouldn't let me install it
  • running windows troubleshooter
  • release ip & flush dns cache
  • I’ve tried pinging various devices on my network and I do get a reply (no packet loss)
I'm at a loss as to what else I can do, any suggestions would be massively appreciated.

Thanks
 
Windows Build/Version
21H2 build 22000.856

My Computer

System One

  • OS
    Win 11
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo Yoga Slim Pro
    CPU
    AMD Ryzen 7 5800H
    Memory
    16GB
    Graphics Card(s)
    NVidia GeForce RTX 3050

iko22

Well-known member
Member
VIP
Local time
11:21 PM
Posts
642
Location
South West England
OS
Windows 10
When you get no Internet icon on your Windows, had you checked the LED lights on the Router device? Might be you need to contact your ISP (Internet Service Provider), as it could be a problem at their end.
 

My Computer

System One

  • OS
    Windows 10
    CPU
    TBA
    Motherboard
    TBA

supermonkey

Member
Thread Starter
Local time
11:21 PM
Posts
18
OS
Win 11
Just made some progress, I am now actually posting from the machine in question!

In network settings, I have changed the IP assignment from automatic to manual & set a custom IPv4 address, & set DNS servers to google (8.8.8.8). Changed to Open DNS & still working fine

I'm guessing it was the IP that has fixed it, but I can't see why the address was wrong, or if it was, why it would work for a few minutes & then fail again.
 

My Computer

System One

  • OS
    Win 11
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo Yoga Slim Pro
    CPU
    AMD Ryzen 7 5800H
    Memory
    16GB
    Graphics Card(s)
    NVidia GeForce RTX 3050

supermonkey

Member
Thread Starter
Local time
11:21 PM
Posts
18
OS
Win 11
When you get no Internet icon on your Windows, had you checked the LED lights on the Router device? Might be you need to contact your ISP (Internet Service Provider), as it could be a problem at their end.
No problem with my internet connection, all other devices connect fine.
 

My Computer

System One

  • OS
    Win 11
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo Yoga Slim Pro
    CPU
    AMD Ryzen 7 5800H
    Memory
    16GB
    Graphics Card(s)
    NVidia GeForce RTX 3050
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