Not connected to any networks....

sam vimes · 09-23-2008, 02:15 PM

Hi,

I have a PC running Vista that has stopped connecting to the internet via a modem router. When connected via an ethernet cable, status lights at the modem router and the PC's lan card both show a good link, but the network centre shows that the PC is not connected to any networks, nor can I see any of the other computers connected to the modem router.

When I add a USB wifi dongle, I can see it talking to the modem router from the flashing status light, and going into the dongle properties, I can see it is exchanging frames with the modem router, but many are dropped with crc errors. It does interrogate the modem router and asks for the wep password, so it is clearly working and talking to the router. But again, it is logging on with 'limited or no connectivity'.

All the other PC's, both by wifi and lan, are using the modem router successfully, so it is clearly a fault on this one PC.

I have attached a screen shot of running ipconfig /new, and this makes me think this is an ip/routing problem, especially as ipconfig /renew tells me that the operation failed as no adapter is in the state permissible for this operation.

HELP!?!?!?!?

**johnwill** · 09-24-2008, 07:56 AM

Your IPCONFIG shows no physical connection to the wired connection. This is either a hardware connection issue or perhaps a stack corruption issue. Try a new cable, and a new port on the router. If that doesn't do it, try this stack reset.

TCP/IP stack repair options for use with Windows Vista.

Start, Programs\Accessories and right click on Command Prompt, select "Run as Administrator" to open a command prompt.

In the command prompt window that opens, type type the following commands:

Reset WINSOCK entries to installation defaults: netsh winsock reset catalog

Reset IPv4 TCP/IP stack to installation defaults. netsh int ipv4 reset reset.log

Reset IPv6 TCP/IP stack to installation defaults. netsh int ipv6 reset reset.log

Reboot the machine.

sam vimes · 09-24-2008, 03:52 PM

Greetings! Thanks for the reply!

First command, ran ok.

Second command, "resetting echo request, failed. Access is denied".

Third command ran ok.

Then I re-ran all three, but this time I did a restart after each command.

First command, ran ok.

Second command, same result as first try

Third command, "resetting echo request, failed. Access is denied. There's no user specified settings to be reset".

Any more ideas???

Cheers,

Vimes.

**johnwill** · 09-25-2008, 07:56 AM

I think I see a different issue here, please do this.

Hold the Windows key and press R, then type devmgmt.msc

Please respond to all the following steps.

Under Network adapters, please tell me all the devices listed.
Are there any devices under Network adapters that have a red x displayed?
Also, are there any devices anywhere in the Device Manager display with yellow ? or ! displayed?

sam vimes · 02-06-2009, 01:14 AM

Ouch!

Just re-read this thread and realised I never posted an update.

My bad, my apologies.

Basically, as johnwill suspected, this turns out to have been a corruption with the tcp/ip stack. Somewhere.

I tried the suggestions offered with no joy, so finally went for the flamethrower option - wipe the disc and do a clean re-install of the operating system.

Guess what.

The network connection came up first time and has been singing sweetly ever since! No hardware fault, software problem.

09-24-2008, 07:56 AM	#2 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 41,774 OS: Windows 7, XP-Pro, Vista, Linux Blog Entries: 1	Re: Not connected to any networks.... Your IPCONFIG shows no physical connection to the wired connection. This is either a hardware connection issue or perhaps a stack corruption issue. Try a new cable, and a new port on the router. If that doesn't do it, try this stack reset. TCP/IP stack repair options for use with Windows Vista. Start, Programs\Accessories and right click on Command Prompt, select "Run as Administrator" to open a command prompt. In the command prompt window that opens, type type the following commands: Reset WINSOCK entries to installation defaults: netsh winsock reset catalog Reset IPv4 TCP/IP stack to installation defaults. netsh int ipv4 reset reset.log Reset IPv6 TCP/IP stack to installation defaults. netsh int ipv6 reset reset.log Reboot the machine. __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience

09-24-2008, 03:52 PM	#3 (permalink)
sam vimes Registered User Join Date: Sep 2008 Posts: 3 OS: Vista	Re: Not connected to any networks.... Greetings! Thanks for the reply! First command, ran ok. Second command, "resetting echo request, failed. Access is denied". Third command ran ok. Then I re-ran all three, but this time I did a restart after each command. First command, ran ok. Second command, same result as first try Third command, "resetting echo request, failed. Access is denied. There's no user specified settings to be reset". Any more ideas??? Cheers, Vimes.

09-25-2008, 07:56 AM	#4 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 41,774 OS: Windows 7, XP-Pro, Vista, Linux Blog Entries: 1	Re: Not connected to any networks.... I think I see a different issue here, please do this. Hold the Windows key and press R, then type devmgmt.msc Please respond to all the following steps. Under Network adapters, please tell me all the devices listed. Are there any devices under Network adapters that have a red x displayed? Also, are there any devices anywhere in the Device Manager display with yellow ? or ! displayed? __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience

02-06-2009, 01:14 AM	#5 (permalink)
sam vimes Registered User Join Date: Sep 2008 Posts: 3 OS: Vista	Re: Not connected to any networks.... Ouch! Just re-read this thread and realised I never posted an update. My bad, my apologies. Basically, as johnwill suspected, this turns out to have been a corruption with the tcp/ip stack. Somewhere. I tried the suggestions offered with no joy, so finally went for the flamethrower option - wipe the disc and do a clean re-install of the operating system. Guess what. The network connection came up first time and has been singing sweetly ever since! No hardware fault, software problem.