PC no longer detects LAN cable

[simonz93]

I never had problems with the connection using a Ethernet lan cable. But yesterday after turning on the PC it suddenly shows that there's no internet even though the cable is plugged in. I plugged the cable into another PC and wired connection works perfectly on it. Plugged it back into the first PC, still no internet. When I click on internet option, there is no way to choose wired connection, only the available wifi connections. It's as if the PC can't detect there is a lan cable plugged in. Restarting the PC or router did not solve the issue.

The really weird thing is that I was able to connect to the internet via wifi briefly after turning on the PC, even though my PC doesn't have wifi antenna! How's that even possible? But now I can't connect to the wifi anymore either, it says can't connect to this network.

I didn't change anything on my PC, both physically or internally. Anyone know what might have caused the problem? I can still see the green light on the motherboard ethernet port, but the orange light that usually flashes is gone.

thanks

Thanks.

 

[reclusiveorc]

Try reinstalling the lan driver. It could have gotten corrupted somehow.

 

[simonz93]

Try reinstalling the lan driver. It could have gotten corrupted somehow.

Thanks for the answer. I went into device manager and there are a lot of stuffs under network adapters. Is it in there? Is it the Realtek PCIe GBE family controller? The other are wireless or Wan miniport.

 

[reclusiveorc]

You could do an uninstall of everything under network adapters in device manager by doing a right mouse click on each one and then do a scan for hardware changes under the action drop down on the device manager command bar. That should redetect and reload the device drivers.