Windows 10: Slow Internet Broadcom Adapter

Hi everyone,

I have an issue with my Broadcom BCM57781 adapter that seems to be unrelated to damage or anything else that would cause ethernet adapters to go haywire.

The issue I'm experiencing is that I get very slow internet speeds on sub 1Mbps, I have to disable or uninstall the adapter and reinstall it and thereafter the speeds are restored again.

I know this is not an issue with the download server because I've tested it with my phone using wifi and the speed is maxed out at 100Mbps.

I've seen many people complain about this issue with Broadcom's consumer level networking equipment and was wondering if anyone knows a fix to this.

So far I've tried every single driver that's supported on Windows 10 for this adapter including Microsoft's generic driver all of them at some point has this same symptom.

This issue has not started recently, it has always been like this on Windows 10.

I'd be very grateful if someone could shed light on what's happening here.

Windows 10 1909 (18363.836).

:)

 

Broadcom 802.11g adapter

Recently ( Nov 2019) updated win 7 to 10 build 18363. My Broadcom WLAN adapter which was listed in device manager up until yesterday (20 dec) has simply disappeared, although when looking in system under "components/network/adapter it is listed as installed.

Now I have no WiFi or Bluetooth connections listed or available in settings/ network & internet! Now I can only connect to the internet by running a 45 foot cable from my modem to the desktop. Everything was working up until (20 dec). I tested the half
card in another comp and it works although its running win 7.

I have read of problems with Broadcom and Win 10 is there any fix???

 

Broadcom 802.11abgn Wireless SDIO Adapter is not working

Hi Tracey,

Corrupted wireless driver is one of the possible reasons why this issue is happening. We recommend uninstalling the driver to help resolve the issue. Follow the steps below:

• Open Device Manager.
  
• Click Network adapters to expand the list.
  
• Right-click Broadcom 802.11abgn Wireless SDIO Adapter, then click Properties.
  
• Go to Driver tab.
  
• Click Uninstall.
  
• Restart your computer.

Note: After restarting your computer. Windows will automatically install a generic driver on your computer.

Keep us in the loop with the result.

 

Problems with Creators Update and Broadcom 440x adapter

It's very unlikely to - Broadcom 440x is not a wireless adaptor!

Someone changed the title of the thread to say it was a wireless adaptor, but I think this is incorrect as the Broadcom 440x is the driver for a wired ethernet adaptor, not WiFi.

The confusion may have been caused because when it was failing, the Broadcom issue also breaks the WiFi networking at the same time, but the actual wireless adaptor isn't the Broadcom 440x in this scenario.