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Win Xp - dhcp failre + arp table empty

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  #1  
Old August 9th, 2004, 02:00 PM
L.T. L.T. is offline
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Question Win Xp - dhcp failre + arp table empty
Hi all,

Can anyone help me with following problem:

All was working fine until a few weeks ago, when lightning caused a power outage when my PC was running. Once the power was restored, I rebooted but I failed to get an IP from my ISP DHCP server. Reason was that the cable modem got hit by the lightening. Modem was replaced by my ISP provider but still I failed to get a IP from DHCP.

The funny thing now is that when I insert that same NIC in my old PC (Win 98), it is working perfectly! And I don't have a fancy setup : NIC directly connected to cable modem.

I tried everything (removed NIC and re-installed it, TCP/IP reset using netsh, ran some utilities I found on the internet that fix some registry entries, ...) but still I fail to get a IP from DHCP. I also see that the arp table is empty (arp -a).

Anybody any idea how to continue with this? I'm really desperate with my old PIII 650 Mhz
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Old August 10th, 2004, 09:32 PM
victorpendleton victorpendleton is offline
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Can you see or access the modem from your computer? When you originally installed the modem was there a setup process that configured the pc as a dhcp client to the modem?
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Old August 11th, 2004, 01:20 PM
L.T. L.T. is offline
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I can see the modem (well I did a network trace using ethereal and I saw plenty of arp requests coming in from my ISP).

No installation was required. It is not the modem acting as DHCP server
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Old August 11th, 2004, 02:07 PM
wanderer2 wanderer2 is offline
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That is correct that it is not your modem giving you a ip address but the ISP.

So I take it you put the nic in a 98 box you get a ip address? If so then it is just the workstation that is having the problem.

I would, in this order, see what driver the nic is using [device properties] remove all protocols, client, delete the nic driver. Run add/remove hardware wizard and remove the nic. Shutdown. Physically remove the nic. Boot back up. Make sure in device manager the nic is gone.

Shutdown and put the nic back in. Startup and have the nic disk handy when asked for a driver [or download from internet and store in folder on hard drive].

Once everything is reinstalled your first stop is ipconfig to see what you have.

Post back what ipconfig shows.
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