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No network connectivity on Desktop

Posted on 2006-06-27
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Last Modified: 2010-04-25
I lost network connectivity on my Dell Dimension. The computer shut off during as lightning storm.
When I booted it up later, it seemed fine but there was no link light for the network card. I replaced the card, the ethernet cable and the cable modem but I still cannot get a link light. I am able to ping the loopback address (127.0.0.1) but that is it. I can access the internet with a different pc so I know my setup is ok. Is this a problem with the motherboard? Everything else seems fine with the computer.
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Question by:erik77
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by:lbbcsg
ID: 16995420
When you go to Device Manager, what does it show for the status of the Network Adapter? Try disabling it, then re-enabling it. Also, if you go under your Network Connections, what does it show for the status of the Local Area Connection? Try going to a command prompt and doing ipconfig /renew and see what happens.
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by:Callandor
ID: 16995421
Did you have a router set up as well?  Is the new cable modem on the same subnet as the the PC?  Lightning can damage a motherboard as well.
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PCBONEZ earned 500 total points
ID: 16995675
Try the card in a different slot if you have another open.
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by:PCBONEZ
ID: 16995681
For that matter try a different port on your router or switch.
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by:rindi
ID: 16996286
Use a completely separate OS, one that boots off a CD, to test your hardware. I suggest knoppix:

http://knoppix.net

but the ubcd4win isn't bad either, it takes longer to build, though.

http://ubcd4win.com
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Author Comment

by:erik77
ID: 17005355
Thanks for all of your suggestions.

there is no router.

Under network connections, it says 'media disconnected'

The nic looks fine in the device manager.

As far as a different slot, both the onboard nic and the new nic card have the same problem, "media disconnected".
I can try another slot but I really do not think this is the problem.

Everything worked great until the lightning storm.

I will try the disable and reenable of the nic. Otherwise, all I can think of is that the motherboard went selectively bad.
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Author Comment

by:erik77
ID: 17014001
Putting the card in a new slot did the trick. I am very surprised because the slot was empty originally. I had to remove my modem to free up a new slot which was fine. Thanks for all your help.
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