Cable Unplugged
Madeleine Harrier
Noticed internet connected to wifi some time back and when I checked network status it showed cable unplugged. I checked and the cable was plugged in, so I tried several other cables. I tried other ports on the router. I do not know when it stopped functioning but it very well may have been after an update and I have read this was an issue recently. I am currently on 11.3.1 Big Sur. 5k 2017 iMac with 3.8 i5.
Okay, please try turning off Wi-fi and see if you continue to have an Internet connection. If you do not, then that points to an Ethernet connection issue, which means likely a problem with the cable itself being used. I would also recommend moving the Ethernet connection order further up. Apple explains this in:
When I turn off WiFi I do not have an internet connection. I am having an Ethernet issue as I explained in the OP. It is not a cable issue as I described in a previous post, that same cable supplies Ethernet to both my MacBook and Dell without issue when tested. Ethernet is already moved up to the top of the connection order, but will not appear above an available connection.
No replies in 3 days? It's not a software issue, it's a hardware issue (maybe something in bios? or firmware?) Because when set up with boot camp and Windows 10 ethernet is not detected either. However if I unplug my ethernet cable from my Imac, and plug it directly into my macbook, it works fine.
Wireless technologies, such as Wi-Fi and Bluetooth, have replaced computer networking cables in many offices and homes. Wireless technologies are also desirable in cases where the cable has to run outside, in conditions that might likely damage it.
There are several steps to troubleshooting a home network router problem. Some things you'll look for include mismatched Wi-Fi security settings, loose or disconnected cables, and defective or outdated hardware.
I had this happen just 2 weeks ago on the doctors computer in the emergency room. I spent an hour troubleshoting everything I could think of from the NIC, to the cables to the switch. Just before I got ready to box up the computer and bring it into the shop, I restarted it and lo-and-behold it started working again.
user4061: apply the K-I-S-S principle. Remember that network connect relies on the component parts for Adaptor/driver, Client, and binding plus connectivity. Simple check on connectivity side might be test the PC with several different cables known good elsewhere. Is this connecting to wall jack or to a switch? Does the switch point auto-negotiate (i.e. crossover works from auto-negotiate connection but not on basic switch/hub) ? Do you have connect and activity indication on the NIC backplane?
I would first try that cable at another computer location. If that does not resolve your problem then I would reseat the nic, search for an update fro the nic, reboot, if that does not work then try another nic.
While several folks replied that the cable must be bad, I think the OP was clear enough that they tried the cable on other computers and it worked, and switched network ports, etc, enough to figure out that the NIC is the problem.
The Network card does not appear at all, or the Network Adapters icon cannot be found in the Device Manager. In this case the network card may not be installed correctly, as Windows should detect almost all cards put into the computer.
The card appears but has a yellow explanation point or a red X over the icon. In this case the card is being detected and Windows recognizes it as a network card but incorrect drivers may have been installed or there is another conflict with the card. Follow the directions listed below beginning with step 4 to resolve the problem.
There are multiple network cards with the same name but there is only one network card installed in the machine. One or both of the cards may have a yellow exclamation mark, or a red X on it. In this case, click on the network card, and click the Remove button. Do this for each card that appears until there are no more cards listed. Close the Device Manager and restart the computer when prompted. Windows should detect only one device when it boots up. Start over at step 1.
I had a very similar problem. Sometimes it showed unplugged but was still xfering data. I had the same lag in the system as well. Turned out to be a bad nic. Was Planning on upgrading them anyway so it was a win/win for me
My new HP Pavillion 17t laptop won't connect to the internet via ethernet cable. It says the cable is unplugged even though the light is on (cable port location) and I have cross-checked this cable with other computers to make sure it works. I have Windows 8.1 and the Realtek PCIe FE Family Controller Network Adapter driver. The wi-fi connections works fine. I tried installing an older version of this driver since I've read that a few people had problems with the Windows 8.1 version of the drivers, but the HP driver installation tool automaticaly updated to the latest version of that driver again and I'm not sure how to do that manually. Any help is greatly appreciated.
Thanks for the suggestions, I actually already came across that document and tried all those things. Well, I didn't do a system restore because this computer is only five days old and it has had this problem from the start. Otherwise, nothing on the list works. I also tried installing both the latest version of the driver from HP (which, when I did 'update driver' from the device manager, the driver was not updated to the newest version that was available from HP), but neither the newest version, the driver version that my device manager said was 'up to date' or even an older version of the driver worked. I read somewhere that Win 8.1 sometimes has problems with ethernet connections based on the newer drivers, so I went with a version that was on an older Windows 7 HP laptop I have that was working with this same connection. It didn't work either. At a loss.
There seems to be a hardware issue with the product. I would contact HP phone support for hardware assistance. You can utilize this website to learn how to contact HP appropriately, based on your region: Contact HP Worldwide
Please let me know if you have any other questions or concerns. Thanks for bringing this issue to the HP Forums. Have a great day!
Mario
I have a similar problem with a new Pavilion. The network manager reports that the ethernet cable is unplugged when it isn't. I became aware of this problem when I first turned the machine on and found that the wifi connection was not reliable. The connection kept crashing showing no internet connection available even when there was. Using the network troubleshooter did not work and it was impossible to talk to the wifi adapter via the control panel or device manager. Shutting the power off caused a prolonged blank screen with just the power light on and then the computer eventuallyy rebooted itself. I tried the LAN connection but the network manager said it was unplugged. Eventually I got the wifi to stay up long enough to get a new wifi driver and the connection is now more reliable but not wholly so and the computer still sulks for a long time before rebooting. The problem with the ethernet connection still persists.
Further to my last post. HP Support were unable to reslove the problem and suggested I return the laptop to Currys. The Knowhow team were able to resolve problem by replacing the mainboard, topcase and USB board. Clearly not a driver conflict as suggested by HP Support.
In most cases, if the VM guest shows that the Ethernet cable is disconnected, it means that in the settings for the VM the Network Adapter's virtual switch is set to "Not connected." Obviously this doesn't seem to be the case for you, but double check to be safe.
Now, to find the cause of the problem, I would make 3 networks in the Virtual Switch Manager. One private, one internal, and one external. Try connecting it to all three and see if anything changes. You should be able to do this while the VM is running.
If something changes, (e.g. You get a connected message on the internal network) remove your external network (From Hyper-V altogether), and try bridging the Network adapters (real ethernet and internal network) in the Host machine. (This may or may not work, and it may or may not be a good idea, but chances are it will give you more information for determining where exactly the problem lies.)
If nothing changes (e.g. it doesn't matter what network you connect to), try making a different VM (like some linux distro or something. Maybe Ubuntu Desktop?) and see if you get similar results. (with its network adapter connected to the private, internal, and external networks)
If you do get similar results with the linux distro, then I'd say it's safe to say it's a problem with Hyper-V and I'd try completely removing it as a feature, and re-adding it. If you do not get similar results with the linux distro (e.g. it works), then it's likely your VM itself, and I'd try removing the Hyper-V drivers and reinstalling them (Which will be a trick without internet, and would probably need it's own question)
Try going to Virtual Switch Manager (listed on the right between Actions for your VM). There should be adapter you have added. Mine was set to internal for some reason and I had same problem, when set to external and assigning my host OS network card it started to work.
A couple of weeks ago the V6 box in my bedroom started disconnecting from the WiFi and refusing to reconnect for ages. It said the Network Cable was unplugged. I have never used an ethernet cable with either of my boxes, it's always been WiFi. I checked the signal strength where the box is and it was over 200mbp. I went through the online tech support and they booked a technician. This morning I was called by tech support and they went through a load of stuff with me and said it was probably the box. They cancelled the tech appointment and are sending me a new box.
After the call I thought about it and decided to see what happened if I took my other V6 box from my lounge and put it in the bedroom instead (wish I'd done it before the call tbh). I got my neighbour to do this for me as I'm disabled. Once it was connected it had a banging 100% signal but then a while later just like the other one it disconnected and gave me the same error. I called Virgin to ask to reinstate the technician appointment, but then it got so complicated because of the language barrier.
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