All Network Adapters Stopped Working

August 25, 2010 at 04:54:11
Specs: Windows 7, Irrelevant
Hello,

After installing GNS3 and configuring a Microsoft Loopback Adapter, I rebooted my PC to make the Loopback Adapter appear in the program. However, after this reboot, none of my network adapters were working anymore!

Outside of the GNS3 context, I am not able to connect to my router, be it wireless or LAN. With wireless, the best I can get is a "limited connection", while in the adapter configuration screen, I see it as "enabled".

Even stranger, when I try ipconfig/all, the lan and wlan interfaces don't even show up. In netsh, I can see them though (but I have no idea what netsh can do, so I'm not touching that for now).

I tried uninstalling the devices, rebooting and reinstalling them, no luck. I deleted the loopback adapter and rebooted, didn't help (it is not in the registry anymore, either).

Maybe dynamips-wxp (comes with GNS3) changed some registry values or something, I don't know. I am clueless as to what I should do now.

If anyone has an idea to help, please share it.

Additional info: this is a laptop with two separate hard drives, and I have another W7 installation on the other hard drive which I am using right now so this isn't a hardware problem.

Also here is the output from ipconfig/all. I don't remember seeing Node Type: Hybrid there before but I'm not sure:

[code]D:\Users\Timothy>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : Timothy-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Bluetooth Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
Physical Address. . . . . . . . . : 00-1E-37-A0-BD-05
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 13:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
[/code]


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#1
August 25, 2010 at 05:40:55
Additional info: this is a laptop with two separate hard drives, and I have another W7 installation on the other hard drive which I am using right now so this isn't a hardware problem.

From this statement I'm guessing you've booted to the other drive and verified the hardware is working..........yes?


If the hardware is fine, then obviously the problem is the software and the loopback adapter. I would remove both and reboot. If your NIC still isn't working, check Device Manager, does appear there correctly (no exclamation mark)?

If it's fine in Device Manager, you might want to try uninstalling, then resinstalling the TCP/IP stack. The software/loopback adapter may have caused some corruption in it.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#2
August 25, 2010 at 05:44:55
Your first assumption was right. So was the second, I did remove the software and the loopback adapter, and all my original adapters were normal in the device manager.

I also did that last thing via netsh. Is this what you meant: netsh winsock>reset? Or am I supposed to do something else?

Thanks ik advance

EDIT: oh, I also did another reset, netsh interface tcp>reset
Is that any better?


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