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Network cable unplugged

By sschilbe ·
I can not get a laptop to recognize the network cable that is plugged into the nic. I have uninstalled, reinstalled the nic, no firewalls, nor anti-virus is running. I have used 3 different cat5 cables, cleaned (as well as possible) the connection on the nic. The nic is showing in the device manager as working properly. The machine detects and automatically re-installs drivers for the nic when i uninstall it. I can connect to a dsl modem using usb, but plan to connect this laptop to a router. The nic was working at one point on Saturday morning. Unplugged it, switched wires around connecting the router and the machine hasn't recognized the cable being connected since. Thanks for any ideas you guys may have!

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by softcorp.us In reply to Network cable unplugged

Hello s...

EXAGGERATION OF KNOWLEDGE

The message says "network cable unplugged", but Windows is exaggerating what it really knows about what is going on. Windows cannot tell if there is a network cable plugged in or not. What Windows knows is that there is no live network on that NIC.

THE REAL PROBLEM

The problem could be a wire failure. Check the condition of your cables and replace them if they are mechanically damaged.

- It is most likely that the device that the cable is connected to is simply not supplying a live network connection. For example, if the device is a DSL modem, it is not connected to its source and therefore is not supplying a network connectiong to the PC.

CONCLUSIONS AND WHAT TO DO

- There is likely nothing wrong with you PC. No need to reinstall drivers.

- Connect the network cables as you want them and wait for your DSL modem to get connected to its source.

- If you want to use a router, start with that in the configuration. By the way, using a router will prevent you from getting the "network cable unplugged" message. The router will supply a live network connection even if the DSL modem does not do the same for it. You will still have to wait for the DSL modem to connect to its source to be able to use the Internet.

Did this solve your problem? Do you have futher issues with this?

-----Steve Jackson

CEO/CSA
Software Corporation (Softcorp)
http://www.softcorp.us/probono
Advanced pro bono tools and utilities free for personal use

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by OTL In reply to Network cable unplugged

While connected to the modem, opened a cmd/DOS window and checked your IP? IPCONFIG.

Rebooted the modem then turn on the PC ?

Do you have the settings for the NIC -> DSL ? And added the necessary network configuration settings ? (Client for Microsoft Networks / TCP/IP / File and print sharing)

Sounds like a software configuration for the NIC is not correct.

Connect to it to the router and see if you can get into the routers configuration screen (HTTP://xxx.xxx.x.x). Error 404 = no IP address assigned to the NIC. Most routers will act as DHCP servers and assign an IP to each port/computer connected to them (in default configuration).

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by a_liss In reply to Network cable unplugged

My money is on hardware. The way to check is if you have a switch or a hub try connecting to the other item if you get the warning still connect the router to the hub and see if the connection lights light up. If the router connects to the hub\ switch but the laptop doesn?t connect to ether you probable have a bad nic in the laptop ;-( . If the laptop connects to the switch or hub but not the router the router may be bad or you may need to use a cross connect cable. Most hubs and switches ether have a cross connect port ( try using that } or they auto correct to what is needed.
Good luck

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by Glastron In reply to Network cable unplugged

Might be stupid question but is the laptop on battery power? Our laptops will disable the nic if the is on battery power and the network cable is unplugged. It will not enable the nic again until you plug it back in to a outlet and unplug and replug the network cable. It is a annoying power saving feature. FYI

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by genec In reply to Network cable unplugged

I had the same problem but it was on a desk top. I checked the cable and pinged all the address and finally had to reformatt my hard drive and reload Windows. I use Windows XP and for some reason it could not see my nic card. I hope this helps.
Gene

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by kevin.j.post In reply to Network cable unplugged

All the other answers are good advice, however if you have access to another computer / laptop, plug it into the same port the laptop is using. If the problem continues then you have either a switch / cable problem, if not then you definately have a bad NIC in the laptop (do not always trust windows saying the hardware is fine, it lies!). Troubleshootig is a process of elimination back to the root of a problem. Good luck.

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