Computer in shop experiencing Strange Networking Problems

December 26, 2014 at 12:11:44
Specs: Windows 7
Hello all, haven't been here in years and don't remember my old account info. I have a computer in my shop right now with an issue that's really got me scratching my head.

The computer will not connect to a network/the internet. It is free of viruses/malware. Here's everything I've done thus far:

- Checked for a proxy - clear.
- Reset hosts file
- Uninstalled/Reinstalled network adapter.
- Installed new network card.
- Shown hidden devices under device manager, uninstalled EVERYTHING under network adapters and reinstalled.
- Ran "Network adapter repair tool" downloaded from bleeping computer - both standard and advanced repair modes. (Winsock, TCP/IP, netsh, etc)
- Ran all network fixes, including firewall fixes, utilizing the AIO tool.
- Run sfc /scannow to check for Windows corruption - all good.

All A/V & security software has been removed. All non-microsoft programs and services have been disabled. It still refuses to pull an IP address.

I have also tried manual (static) configuration of the IP/DNS/gateway etc - no dice. Router has of course been reset as well - other pc's operating on this router just fine.

Windows senses that a network cable is plugged in but that's it, it just displays a little yellow exclamation point stating "no internet access".

When set for DHCP, it generates it's own 169.x.x.x address.
Ipconfig release/renew give an error stating "An attempt was made to access a socket in a way forbidden by its access permissions". My google-fu has failed to produce anything tangible on this error.

When set statically, trying to ping the router results in a "general failure" error message. Trying to ping an external IP results in "ping request could not find host" message.

The problems are identical on both the old and new network card. I'm officially at a loss as to what the problem is, hoping someone here has seen this issue before. I remember seeing this issue ONCE in the past, probably 6 years ago... cannot remember how I fixed it.

Thanks for reading.

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December 26, 2014 at 13:19:00
Does the problem persist with any router, or just your home router?

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December 26, 2014 at 14:36:50
Happens with any router.

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December 26, 2014 at 16:03:29
What happens if you ping the loopback address?

do you get reponses?

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Related Solutions

December 26, 2014 at 19:18:21
It sounds like a repair install of Windows may be in order here.
If the event is recent though, a System Restore might be able to repair it. Going back well before the time frame that it began is where I would shoot for, then rerun Malwarebytes to make sure nothing reappears from the past.
If sounds like a corrupt system file or registry setting possibly from an already removed infection. Have you scanned for root kits?

You have to be a little bit crazy to keep you from going insane.

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December 26, 2014 at 23:11:24

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