MediaTek Wi-Fi 6 MT7921 Wireless LAN Card not working in windows 11

Question

Hello,

I have an acer aspire 5 A515-57-565J with Windows 11 24H2 and my mediatek network driver just stopped working.

I already tried to check if there were updates for it with Windows Update, I tried to uninstall and restart the PC, I tried to install another driver from this source: https://oemdrivers.com/network-mediatek-mt7921-wireless-lan-driver that came from this acer community question: https://community.acer.com/pt/discussion/665721/a515-45-r6kh-instabilidade-rede-wi-fi-wireless-mediatek-mt7921-resolvido, but nothing worked.

When I check the properties of this device in device manager, its status shows the following message:

"This device cannot be started. (Code 10)

{Operation failed}

The requested operation was not successful."

any tips in what i can do?

thanks for all the advice.

Answer 1

Hallo,

Ik heb een Acer Aspire A715-51G en had hetzelfde probleem na de Windows 11 24H2 update met datum 22-2-2025.

Naast mijn MediaTek Wi-Fi 6 MT7921 Wireless LAN Card werkte ook mijn Realtek PCIe GbE Family netwerk kaart en

Intel(R) Iris(R) Xe Graphics kaart niet meer.

Wanneer ik de eigenschappen van dit apparaat controleer in Apparaatbeheer, wordt ook de volgende statusmelding weergegeven:

"Dit apparaat kan niet worden gestart. (Code 10)

Ik heb vervolgens de laatste Windows update ongedaan gemaakt en daarna werkte alles weer naar behoren.

Het is hier dus wel degelijk een Windows gerelateerd driver probleem lijkt mij.

Het advies is dus om de laatste Windows update terug te draaien via systeem herstel.

Schift indrukken en windows laten herstarten, daarna kom je in het menu voor de verschillende herstel opties.

Succes!

Groet,

Cornelis

Answer 2

Hi, Hudson Silva2

Welcome to Microsoft Community.

We understand that you have encountered the problem that the wireless network card cannot be used.  From the description you provided, you have tried some methods, including getting drivers back from third-party websites and updating drivers from device manager, so other factors may need to be considered.When did your problem appear? Did you update the Windows system before the problem occurred?Did you update the Bios or modify the settings in the Bios before the problem occurred?Before that, I suggest you try the following scheme first:I. Reinstall the driverUninstall your network card driver in Device Manager, and then visit Acer official website to download the driver of the corresponding device model: Download Acer Support Drivers and Manuals | Acer United States*Disclaimer: This is a non-Microsoft website. The page appears to be providing accurate and safe information. Watch out for ads on the site that may advertise products frequently classified as PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.*II. check the BiosFollow the shortcut key instructions in your notebook manufacturer's manual to enter the motherboard Bios interface, and then check whether there are any settings related to "wireless network card" to ensure that your onboard wireless network card is not disabled in the Bios.*Disclaimer:  Microsoft provides no assurances and/or warranties, implied or otherwise, and  is not responsible for the information you receive from the third-party  linked sites or any support related to technology.**If you are going to modify BIOS Settings, please  back up all your personal files first to ensure you do not lose data.*III. Reset the network1. search CMD, open and find the command prompt (,run in administrator) mode.2. Enter the following commands in turn in the pop-up command box (enter the next one after each line runs).ipconfig /releaseipconfig /renewipconfig /flushdnsipconfig /registerdnsnetsh int ip resetnetsh winsock resetnetsh winhttp reset proxy3. Restart the computer to see if it can solve the problem.IV. repair the system through Media Creation Tool.This is not a reinstallation of the system, it will repair your system without deleting files or applications. However, if there is important data in the computer, we still recommend backing it up in advance.Once the backup is completed, please follow the steps in the following guide:Download Windows 11Visit the site above and select Download Now Tool-Run Media Creation Tool-Select Yes-Select Accept-Select Create Installation Media for Another Computer-Select DVD ISO File-Save as Local File.Run the local WINDOWS. ISO file-right-click-mount-choose to run setup.exe-choose not to use it temporarily-choose to keep personal files and settings-choose Next-wait for WINDOWS Repair installation to complete-restart the WINDOWS computer.Disclaimer: At this point, we have exhausted all troubleshooting and I recommend that we try to perform a clean install to get your computer back into a working condition. Please ensure that you backup any important data, including Documents, Pictures, Videos, and more. After that, you can find instructions on how to install Windows 10/11 in the following article by MVP Andre:How to: Perform a Custom Installation of Windows 11 and Windows 10 - Microsoft CommunityV.Check the hardware problemIf the above methods are ineffective, it may be a hardware failure:Check the hardware connection:If you have the relevant skills, you can check whether the wireless network card is loose (you need to disassemble it carefully).Contact Acer customer service:If there is still no solution, it is recommended to contact Acer official support for warranty or replacement.If you have any progress, please feel free to contact us.

Best Regards

Nicholas.Z - MSFT | Microsoft Community Support Specialist