Ethernet Port sudently stopped working?

Hello all,

I have an Acer Aspire 5742ZG and the ethernet port stopped working.

I tested the cable on another laptop and it worked... so I know the cable is ok.

Interesting is that the Ethernet Port still shows the GREEN signal when connecting the cable to the computer...

What can it be? How to fix this?

 

Go into the Network and Sharing Panel (or it's W10 equivalent), you can try "Diagnose and Repair", but I usually just go to the Manage Network Connections, right click on the Ethernet Adapter icon, Disable (release mouse button), right click again on the Ethernet Adapter, Enable (release mouse button), and see if it reconnects.

What does your Network and Sharing Panel show in the graphic for connectivity on the ethernet? Is local network connected and Internet is disconnected, or is the link broken to the network?

You could try a different cable, even it the old one works in another laptop the clearances might be different, try another style ethernet connector and wiggle it / push it in all the way and then gradually pull out against the lock, does it connect?

So first you determine if it's software before delving into bad hardware.

 

It worked... Windows 10 decided to deactivated the Ethernet Port... So I manually activated it

Thank you so much

 

It happens often on some laptops when you use Hibernation or Sleep, sometimes it won't reactivate and you need to do a shutdown and cold boot to re-enable the ethernet.

Sometimes the Ethernet Disable will hang and stop the shutdown - so you have to push and hold the power button - then power it up and it should enable the ethernet.

I disable Hibernation and Sleep these days and live with normal full shutdown and cold boot. The SSD's and machines are so fast these days it's pretty quick to boot up - not as fast as coming out of sleep or hibernation, but it's fast enough for me, without the ethernet hangs and other oddities.

Start a cmd shell As Administrator:

powercfg /h off <= disables hibernation, reboot

powercfg /h on <= enables hibernation, reboot - not recommended.

You also benefit by removing the 1x memory sized hidden file C:\hiberfil.sys which for me + no pagefile.sys saves me 64GB on my boot drive.

Have fun

 

That makes perfect sense =)

Again, thank you so much for your assistance, it has been crucial =)