Windows 10: Mediatek Wifi 6 MT7921 Code 45 error and constant crush

Discus and support Mediatek Wifi 6 MT7921 Code 45 error and constant crush in Windows 10 Drivers and Hardware to solve the problem; I have a problem with my WiFi card, Mediatek MT7921. It constantnly disconnects my WiFi and the wifi card disappears in the device manager. The code in... Discussion in 'Windows 10 Drivers and Hardware' started by Sebby Jello Hello, Jan 17, 2025.

  1. Mediatek Wifi 6 MT7921 Code 45 error and constant crush


    I have a problem with my WiFi card, Mediatek MT7921. It constantnly disconnects my WiFi and the wifi card disappears in the device manager. The code in the device manager is 45, that the device isn't connected to the computer. Last time, I got the same problem like half a year from now on, reinstalling system and wiping all data helped, but now suddenly problem reappeared, firstly at 6th January, but I found a hint that there might be created microsoft wifi direct virtual adapter#2 created - and to remove it - and it worked... but for few days. Now problem persists again. More - now, I checked

    :)
     
    Sebby Jello Hello, Jan 17, 2025
    #1

  2. Mediatek Wifi 6 MT7921 Code 45 error

    I am also facing same issue with MediaTek Wi-Fi 6 MT7921 Wireless LAN Card since May 2023 for My asus Tuf gaming f15
     
    Abhishek Varma G V S, Jan 17, 2025
    #2
  3. Vegoro Win User
    Mediatek Wifi 6 MT7921 Code 45 error

    I experiencing the same problem and believe I found at least a long-term workaround. Do note that this is not a permanent solution, but should subdue the problem for a least a few weeks to a couple of months before needing to redo the process.

    If you could to most other web pages regarding the same problem, they will most likely tell you to restart your computer, open the command prompt and type a few lines of code, or perhaps restart your BIOS. I can say that sometimes it works but it is not a 100% guaranteed solution. It is also a good idea to head to your computer's model webpage and ensure you have the latest driver installed.

    The method I found that has proven the most useful is to manually clean the hardware of the computer. Rather than trying several software solutions, look toward a hardware solution. I can not speak for all computers/laptops, but for my ASUS A15 Gaming Laptop, I simply remove the underside panel showing the circuit board, battery, memory card, and all the gizmos. To my understanding, the reason for the Code 45 is that the Wi-Fi card is overheating and this is due to not enough air circulation in the laptops. I would recommend cleaning (safely) the small motor fans built into the computer to remove any dust or debris. I predominantly use a lightly damped paper towel to remove the dirt but a dried one. If you are unconfident in your abilities, take it to a professional. Once complete, reattach the undersized panel that is back in place and restart your laptop.

    From personal experience, this has solved my Code 45 problems for up to a few weeks to maybe a little over a month before needing to repeat the process. I believe that the Mediatek Wifi 6 MT7921 was manufactured without being resisted to high amounts of heat. Therefore, having constant airflow to provide a cooling mechanism is essential and theoretically solves the problem.

    Use this information at your discretion. Best of luck.
     
    Vegoro, Jan 17, 2025
    #3
  4. Mediatek Wifi 6 MT7921 Code 45 error and constant crush

    Mediatek wifi 6 mt7921 is not showing in device manager

    I have asus tuf f15 and the wifi device mediatek wifi 6 mt7921 is not showing in device manager, and also wifi symbol is not shown
     
    Vijay Ilangovan, Jan 17, 2025
    #4
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Mediatek Wifi 6 MT7921 Code 45 error and constant crush

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