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Can't Identify Network, No Internet, all adapters.

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Last response: in Windows 7
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I've recently have a Sony Vaio laptop that will not get an IP addess and cannot identify networks. Both wired and wireless stay at identifying network, no internet access. At this point i've uninstalled Bonjour, reset my winsock catalog, checked the LSP, checked proxy setting - none, tried static information with no luck, uninstalled devices and reinstalled, deleted device drivers and reinstalled with new drivers, ran tweaking to reregister files, remove policies set by infections and so forth. I've scanned the PC with Combofix, Emsisoft Emergency Kit, TDSSkiller, and Malwarebytes and have found nothing. I've also removed the drive and scanned it externally. I'm almost down to a backup and reload. I've also remove IPv4 and IPv6 and reinstalled. Any suggestions?

More about : identify network internet adapters

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itguy1981 said:
I've recently have a Sony Vaio laptop that will not get an IP addess and cannot identify networks. Both wired and wireless stay at identifying network, no internet access. At this point i've uninstalled Bonjour, reset my winsock catalog, checked the LSP, checked proxy setting - none, tried static information with no luck, uninstalled devices and reinstalled, deleted device drivers and reinstalled with new drivers, ran tweaking to reregister files, remove policies set by infections and so forth. I've scanned the PC with Combofix, Emsisoft Emergency Kit, TDSSkiller, and Malwarebytes and have found nothing. I've also removed the drive and scanned it externally. I'm almost down to a backup and reload. I've also remove IPv4 and IPv6 and reinstalled. Any suggestions?


As far as trying to flush/reset network settings I have run the following commands

ipconfig /flushdns
netsh int ipv4 reset
netsh int ipv6 reset
netsh winsock reset
nbtstat -R
nbstat -RR

I've also replaced the host file. I'm starting to really hate this computer. I've been researching and working on this thing for almost three days now. I have time before it has to be fixed so I would really like to fix the issue for future issues before biting the bullet and reloading.
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njxc500 said:
You should definitely not have a dhcp server on your laptop, that should be on your router, a dhcp problem would cause this and if you're running 2 of them on the same subnet it's trouble.


I think you misunderstood. The dhcp client service is not starting. I've also found that the TCP/IP NetBIOS Helper service isn't starting. Both share the dependency of the "Ancillary Function Driver for Winsock". This laptop has the identifying network issue on all networks. I has been tested outside of our building.

itguy1981 said:
I think you misunderstood. The dhcp client service is not starting. I've also found that the TCP/IP NetBIOS Helper service isn't starting. Both share the dependency of the "Ancillary Function Driver for Winsock". This laptop has the identifying network issue on all networks. I has been tested outside of our building.



Check the windows event log as to why dhcp client isnt starting

Okay. My system log shows
The TCP/IP NetBIOS Helper service depends on the following service: Netbt. This service might not be installed. I also have an error that WinHTTP Web Proxy Auto-Discovery Service depends on the DHCP client service..... AND The DHCP CLient service terminated with the following error: The system cannot find the file specified. Anyone know what file(s) it may be referring to.

Under network connections I have my local area connection, Marvell Yukon Ethernet connection, which always shows identifying. Currently, I have the wireless uninstalled, but when it is installed it does the same thing. I don't see anything that says unknown that you may be referring to. As of now I think I need to look at why the DHCP client service and TCP/IP NetBIOS Helper service aren't starting.

Our company has 2 test networks we use for infected PCs. I put in static IP, subnet, and gateway to match each network. I used 8.8.8.8, google, for DNS server. At the moment I don't remember what the statics were. I typed them in as our network admin gave them to me. I didn't write them down. However, I can say that even with all of the configurations static I can't ping any devices on the network.

I'm not currently using google for dns. I only tried it when I changed the settings to static for testing purposes. Either way I couldn't get to any server right now. I'm not getting an IP and can't even get a ping replies from any gateway I connect this laptop to.

Sorry I haven't replied in a while. So today I have made a little bit of headway on the issue. I noticed the TCP Net BIOS service didn't have NetBT as a dependency when it should have. I copied the file and exported the registry keys from my Win 7 PC and imported it in to the other Win 7 PC with the issue. The dependency is now there, but the service still won't start. I have a feeling it has something to do with the winsock.
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itguy1981 said:
Sorry I haven't replied in a while. So today I have made a little bit of headway on the issue. I noticed the TCP Net BIOS service didn't have NetBT as a dependency when it should have. I copied the file and exported the registry keys from my Win 7 PC and imported it in to the other Win 7 PC with the issue. The dependency is now there, but the service still won't start. I have a feeling it has something to do with the winsock.


Winsock is definitely intertwined into all those Network stack services that matter (i.e. TCP/IP, NetBIOS, DNS, etc.).

I know you've probably attempted this but I'm going to throw it out there anyway. Boot into Safe Mode w/Networking and see if the status changes. If it doesn't, go into MSConfig and configure the computer for a clean boot, instructions can be found HERE , and see if the network connectivity issue actually connects. Please don't take this as a indication that I don't think you know what you are doing because that isn't what is intended. I learned a long time ago that even the smartest person can miss the smallest of things.

Let me know if that helps.

I still have the same result when I boot to "Safe boot" or "Safe mode with networking". As mentioned before I replaced the netbt file in the drivers folder and exported my Win 7 netbt reg folder to this PC. I now get a different message in my event viewer. I now get an error that the NetBT service failed to start because it is either disabled or has no enabled devices associated with it. I'm not familiar with NetBT. As far as I can tell it's not a service that I can just enable.

I FINALLY FIXED THE PROBLEM. Narrowing the problem down to NetBT and DHCP services I did the following.

Replaced the following files in C:\windows\system32:
netbt.sys
dhcpcore.dll
dhcpcore6.dll
dhcpcsvc.dll
dhcpcsvc6.dll
dhcpsapi.dll

I also noticed differences in my registry vs the broke PC so i exported my HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NetBT and HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DHCP to the broke PC.

Started DHCP service afterward with no problems. Network identified and internet is working. Thank you for the input everyone.

itguy1981 said:
I FINALLY FIXED THE PROBLEM. Narrowing the problem down to NetBT and DHCP services I did the following.

Replaced the following files in C:\windows\system32:
netbt.sys
dhcpcore.dll
dhcpcore6.dll
dhcpcsvc.dll
dhcpcsvc6.dll
dhcpsapi.dll

I also noticed differences in my registry vs the broke PC so i exported my HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NetBT and HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DHCP to the broke PC.

Started DHCP service afterward with no problems. Network identified and internet is working. Thank you for the input everyone.


Glad you got it sorted mate, nice work!
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