Wireless
Issues related to Intel® Wireless Adapters and technologies
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killer wireless ac 1550i not work well in windows11

avasz
Beginner
1,429 Views

My notebook update to windows 11 resently. And I found problem, as picture show, 

 

killerproblem.jpg

 why 5GHz hasn't 40/80/160MHz ? And 2.4G also only has 20MHz.

What happen and how to fix it?

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David_G_Intel
Moderator
1,405 Views

Hello avasz

 

Thank you for posting on the Intel️® communities. Please share with us the following information:

  • Is this a laptop or desktop system?
  • Do you get any Bluetooth issues?
  • Is this issue happening at home, office environment or both?
  • Is this a new computer? If so, have check with your system's OEM for validated drivers or support on known issues related to the symptoms experienced?
  • Is this the original adapter that came pre-installed in your system or have you changed/installed a new adapter recently?
  • Have you checked if this issue happens on different networks?
  • Were you able to have you wireless connection in a normal/expected performance before?
  • Have you installed any recent software or hardware in your system?
  • Have tried a roll back to a previous driver version for testing?

Our support is only provided in English. We may not be able to translate screenshots attached to the thread. 

 

Regards, 

David G 

Intel Customer Support Technician 

 

avasz
Beginner
1,394 Views

Thanks for your reply.
1. My laptop is MSI GE75 series.
2. Bluetooth is not found any problem now.
3. Both.
4. Laptop is not new, it's about 3 years.
5. It's a original adapter. No changing anything.
6. I have checked on different networks.
7. It's formal to connect any wireless before, until system update to windows 11.
8. No.
9. Yes, still the same.

Bellow is showing detail at home. The speed is very slow. 

killerproblem1.jpg

David_G_Intel
Moderator
1,389 Views

Thank you for the update, please share with us the Intel® System Support Utility (Intel® SSU) results to investigate:


Regards, 

David G 

Intel Customer Support Technician


avasz
Beginner
1,384 Views

Is  scaning file need to post? Or do something?

David_G_Intel
Moderator
1,374 Views

Please share with us the SSU results to get a better understanding of the system setup.


Regards, 

David G 

Intel Customer Support Technician


avasz
Beginner
1,365 Views

As attachment....

David_G_Intel
Moderator
1,334 Views

Thank you for the information provided, in a case like this it's recommended using the drivers that the laptop manufacturer provides. OEM drivers include customizations that Intel generic drivers do not. I checked the OEM website and it seems that they do not provide Win11 drivers for this system, please contact them to confirm if Windows 11 is supported on your system and also try their customized drivers (if the OS is supported).


Regards, 

David G 

Intel Customer Support Technician


avasz
Beginner
1,327 Views
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