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How do I fix a Local area network connection on HP6730s running Vista Business?

I reinstalled Vista Business and all the drivers on my HP6730s and still cannot connect to the internet.  The notebook is connected to a 5 port switch.  I've connected another laptop to the same port to confirm that the cable & port works.   I've reset the NIC, swapped out cables and ports..

When I run Windows Network diagnostics to repair the NIC card, I get the message "Plug a cable into the network adapter "Local Area Connection"

Could someone tell me how to fix this problem?  I'm stumped!
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dee43
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dee43
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2 Solutions
 
agriesserCommented:
Maybe the ethernet jack of your notebook is broken? Can you verify that the pins are OK? Do the link LEDs light up when you connect the notebook to your switch? Can you try to connect your notebook directly to the other notebook or directly to your internet modem/router?

Do you see any unknown or not-installed devices in your device manager?

What cables do you use? straight or cross-over cables?
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dee43Author Commented:
I connected the notebook directly to a  network port (RJ45 - T1 line) and stil I get nothing.   The device manager looks fine.  However, in the problem reports & solutions, there is a problem listed "could not find driver software for  PnPDriver; and unable to diagnose/repair network problems.  
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agriesserCommented:
OK, so maybe the windows driver for your network card doesn't really work well. Try to find out what network card is built into your computer and download the driver manually. First I would have a look at the download and support website of the notebook's manufacturer to see if there are additional or updated drivers available for the network interface cards.
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dee43Author Commented:
I have all the latest manufacturer drivers from hp web site installed, still no internet connection.  However, I am getting an LED light now.
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agriesserCommented:
OK, if you have the LED now, try to see if the network settings are correct. If your home network uses DHCP, make sure that the LAN connection is also configured to use DHCP, if you use static IP addresses, assign one free static IP address to your notebook.

After you've done that, can you ping your default gateway? This is usually also your DHCP server (if you have one).
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dee43Author Commented:
The connection is configured to obtain an IP address automatically (DHCP).  I can ping 127.0.0.1.  I can also connect to unsecured network with excellent strength (it says I'm connected) but cannot access internet although is is saying that I'm connected and I cannot connect to the internet via local area connection.

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agriesserCommented:
You can always ping 127.0.0.1, that's your loopback device and is physically on your machine. So, are you saying that your notebook receives an IP address from your DHCP server? One out of your configured DHCP scope? If so, could it be that simply the default gateway does not get configured on the notebook properly?

If you do know the IP address of your router/DHCP-server, try to ping that from your notebook. Does that work?
If it does, try to add the default gateway manually from the command line with the following command in a cmd box:

route add 0.0.0.0 mask 0.0.0.0 xx.xx.xx.xx metric 1

WHERE xx.xx.xx.xx is the ip address of your default gateway (probably your DHCP server too).
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