Mobo NIC not operating correctly

[t2clej]

I have been having an issue with LAN port on Asus mobo. Running Win10.

For 9 months, I have had the network set to auto link which resulted in 1.0Gbps link and everything worked properly

However, I had network connection issues yesterday. The computer would not connect to my home network. After changing switch, cables, etc I found that if I manually set the link speed to 10Mbps or 100Mbps, the computer WILL connect to my network at that set speed.

If I set it to auto negotiate link or 1.0Gbps link speed it will NOT connect. I've removed and reinstalled the network card drivers as well.

I am able to use USB network adapter via USB 3.0 port and get link at 1.0Gbps.
However, I want to fix the NIC on mobo and use that if possible.

Does anyone have advice on how to fix this? Thanks.

 

[degrub]

is the usb using the same cable and switch port as the pc was ?

had any power issues or lightning in the area recently ?

try a PCIe intel lan card and see if that helps.

 

[t2clej]

Yes - tried 3 different cables and 2 switches. Same results.

Is it possible that the lan port on mobo is defective but still allows 10-100Mbps while not allowing 1.0Gbps? Seems strange if that is the case.

 

[degrub]

try a linux live distribution on USB or CD/DVD and see if the port behaves the same. i once had a OS issue with Win7 that was only resolved by a complete rebuild of the system.

yes it is possible that it will sync at 100 versus 1000 as i believe an additional pair is required for 1000.

 

[FatherLandDescendant]

Have you tried updating the Networking drivers for the MOBO?