Windows 10: Built in ethernet does not work, USB ethernet ports do.

I am trying to figure out what is going on with my ethernet ports. When there is nothing plugged in to my built in ethernet port, I get the message "unidentified network, no internet". If I plug an ethernet cable in to this port, it tells me there is no cable there and wont connect. external USB ethernet ports work fine.

submitted by /u/Sgt_lovejoy
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:)

 

New build, all works but ethernet

Anyway everything works fine except for the ethernet port. Under device manager it is listed as "Ethernet Controller", under the category of "unknown devices" (along with several other unknown devices).

 

ethernet ports

Hi,
I just noticed that my mobo has 2 ethernet ports. Currently my download speed is around 15000kb/s on speedtest.net, I was just wondering if i plugged in another ethernet cable to the open ethernet port, will my download speeds double?

 

Ethernet port not blinking...

possibly your ethernet port has died...

Unless if you format/reinstall windows , and see if that way... but overall, physically take a look at the motherboard in the computer, and see if any capacitor's top's have blown open or even have a bump on them (the tops of the capacitors should be flat) . If any indication that happens, then your mobo is eventually gonna die.

Other than that, u went through all other steps that are very known..

**My Friends system not to long ago has the exact same issue, and there were caps blown, but only the ethernet didnt work