Computer can't make Solid LAN Connection

[ig.7157]

My 2-year-old built computer stop being able to realize that an ethernet cable is plugged in. The Ethernet cable works fine on my laptop. I think I have the right drivers installed, the Realtek PCIe GBE Family Controller installed in Network adapters. Also, the light next to the ethernet jack does not illuminate on either the computer of the modem.

I have tried: restarting the computer and modem, unplug and replugging the ethernet cord, disabling and enabling the Realtek PCIe,

What are the likely solutions? If there is a thread with answers please point me to them.

If this helps my motherboard is MSI Z97 PC Mate LGA 1150 Intel Z97

 

[bill001g]

When you get no lights on the equipment it tends to be hardware related. This function is done mostly by the hardware and does not rely on firmware much. Other than disabling the port in the bios there are not many software setting that can cause that. Many motherboards now support wake on lan so the ethernet port can have lights even when the machine is in shutdown mode. Not having lights tends to be a bad sign.

I would try a new cable. Even though it works on your laptop the cable may still be defective. Some devices can tolerate a cable that is out of spec more than others. It is pretty much the only inexpensive thing you can try. After that you are likely looking at a bad port in the machine which generally means replacing the motherboard to actually fix it or buying a add in card.

You could I suppose try to download and reinstall the ethernet driver, not real likely but windows update loves to mess with drivers but I have only had it mess up video drivers. There is a option in the update setting to prevent it from downloading updates for stuff that is not microsoft but that does no good if it already messed it up. I really doubt that is the issue though.