[SOLVED] Ethernet port seems to be not working

[illestupnorth]

My Ethernet port recently stopped working without explanation, both green and amber lights are solid on my motherboard but on my router its just a solid green color and getting no connection, but when I plug in my Ethernet to USB it seems to work but its a constant flickering amber light

 

[Ralston18]

System specs & OS? Any known software updates?

Make and model router?

Is the current ethernet connection motherboard LAN port directly to router LAN port? Or are there any interim connections such as a wall jack, a switch, or a powerline adapter?

Have you tried another known working ethernet cable?

Download the motherboard's LAN adapter drivers via the manufacturer's website. Reinstall and reconfigure for your network.

 

[peptobismal]

Usually you don't want both lights to be solid... the green light on your motherboard should be solid signifying that there is a connection, but the orange light should be constantly flickering signifying that data is transmitting.

Most modern modems won't have a solid green light rather a flickering one signifying that there is data being transmitted.

Again, as Ralston said the following information would be beneficial to troubleshooting:
Make/model of router:
Make/model of modem:
Motherboard make/model:
(or make and model of pre-built system)

On top of installing your motherboard's NIC/LAN drivers, you might want to try and just reset your router to default factory settings.

 

[jsmithepa]

A sudden death (u swear nothing is been changed) is usually caused by Windows auto-update overriding your good LAN driver with something else. Run Windows Restore to a point when this was working.

In the future, this guy suggest setting Windows update to manual. Do your updates at the time of your own choosing and control.