Solved

TCP/IP - Windows 7 / Vista

Posted on 2013-11-02
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Last Modified: 2013-11-07
Was cleaning a Vista x64 computer and lost network connectivity. No DHCP connection, hard set an IP, still no ping out, con connectivity. Disabled internal NIC and added PCI NIC, same issue. Tried USB Ethernet adapter, same. Even tried USB wireless adapter. It saw the SSID and took the password, then no IP other than the 169. default one.

Ran Rkill, Rouge Killer, Malwarebytes, even Tweaking.com's repair suite. Removed drive and scanned with Vipre and TDSSKILLER. No rootkits.

So in desperation I imaged the drive and did an upgrade to Windows 7 Ultimate, SAME ISSUES!!

It's not location specific either because I have worked on it at two different places.

An ipconfig /renew returns "unable to contact your DHCP server".

I'm stumped.
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Question by:comnet_nm
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5 Comments
 
LVL 16

Expert Comment

by:Dirk Mare
ID: 39619234
Is DHCP enabled on your router or server?

Can you confirm if any other device can connect..
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Accepted Solution

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comnet_nm earned 0 total points
ID: 39619235
I fixed it.
Was cruising the registry and found some Norton droppings, looked like Norton 360.
Must have been removed at some point but only partially.
I found and downloaded a removal too, ran it, rebooted and now all is well.
Thanks anyway!
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LVL 24

Expert Comment

by:aadih
ID: 39619246
Great. You (went to great lengths) and fixed it. :-)
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LVL 83

Expert Comment

by:Dave Baldwin
ID: 39619316
For what it's worth, most antivirus programs install a proxy that all of your internet connections go thru.  Norton and McAfee often do not uninstall properly and leave the proxy redirection there without a proxy software to manage it.  Which is why they both have 'Removal Tool' software.  Some others do too.
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Author Closing Comment

by:comnet_nm
ID: 39629705
It is self serving, but I hope it will help someone else in the future.
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