Desktop machine stopped functioning on LAN.

[TheVrolok]

Booted up my desktop (Vista x64) machine this morning and things seemed fine. Loaded WoW, logged onto server, got a UI error, exited WoW. Started WoW again, went to log in, machine hung. Hard rebooted, booted up, now I my networking will not work. Disabling windows firewall has no effect, my LAN connects but does not properly identify the network. It used to identify my WRT54G just fine. I also have a wireless PCI card in my desktop, I enabled it and sent up my wireless network (WPA2/non broadcasting) and I can see the network but windows complains that it can't connect. I'm typing this on my laptop which is working as normal which leads me to believe it's not my router. I can't even log into my router via my desktop machine. For reference, I have DHCP disabled.

The two computers are:
Frenzy (Desktop)
Asus P5N32-E Sli Plus Hybrid onboard LAN
192.168.1.100
255.255.255.0
192.168.1.1

Rumble (Laptop)
192.168.1.101
255.255.255.0
192.168.1.1

Both with matching appropriate DNS servers.

I'm going to try reinstalling the desktop's nforce networking drivers to see where that goes but I have little hope for it. Any further suggestions would be great. Apparently I lied, there are no drivers on Asus' site for Vista / LAN. Most likely because it was auto-detected by vista just fine. Now I really have no idea what to do.

Little additional info. There are 2 ethernet ports on my motherboard that can be used in tandem; I'm not using that functionality but neither port works when connected to my router. I usually just keep the port I'm not using disabled. Oh, and obviously using the Vista "diagnose" yields nothing that helps.

Event log information when I disable/enable my ethernet port:
Nothing in Apps, Sec, or Setup. However, I get a few things in System.
I'm getting mostly informational stuff that appears fine, User-PnP finishes successful, Tcpip reports normal operation. I am getting an error, however.

8003 - Browser.
So you don't have to look it up: The master browser has received a server announcement
from the computer RUMBLE that believes that it is the master browser for the domain on transport NetBT_Tcpip. The master browser is stopping or an election is being forced.

Thing is this; I always thought it was related to DHCP problems and incorrect subnets/ip configs. As you can see above, my home network consists of 2 computers and it's incredibly basic. There are no subnet/IP conflicts. So I'm not sure what's going on.

Disabling the Computer Browser service obviously removes the error from popping up in the log, but does nothing to help get my system back on the network. I'm stuck now. Nothing to reinstall, it seems like reinstalling Windows is my only choice, and I REALLY don't want to do that.

I enabled the DHCP server on my router and set both of my computers to obtain; laptop works perfectly. Desktop will not pick up an IP on the wired LAN or the wireless PCI card. Can anyone think of anything else I can do? It's really boiling down to Windows reinstall.

Lastly, I just connected my laptop to my router via ethernet port/cable after disabling wireless and it works fine. I can now confirm that it's my desktop machine and not the router.

[johnwill]

Hold the Windows key and press R, then type CMD to open a command prompt:

Type the following two commands:

NBTSTAT -n

IPCONFIG /ALL

Right click in the command window and choose Select All, then hit Enter.
Paste the results in a message here.

If you are on a machine with no network connection, use a floppy, USB disk, or a CD-RW disk to transfer a text file with the information to allow pasting it here.

[TheVrolok]

Functioning Machine: Rumble (laptop)

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\TheVrolok>nbtstat -n

Wireless Network Connection:
Node IpAddress: [192.168.1.102] Scope Id: []

NetBIOS Local Name Table

Name Type Status
---------------------------------------------
RUMBLE <00> UNIQUE Registered
RUMBLE <20> UNIQUE Registered
WORKGROUP <00> GROUP Registered
WORKGROUP <1E> GROUP Registered
WORKGROUP <1D> UNIQUE Registered
..__MSBROWSE__.<01> GROUP Registered

C:\Documents and Settings\TheVrolok>ipconfig/all

Windows IP Configuration

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

Ethernet adapter Wireless Network Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom 802.11g Network Adapter
Physical Address. . . . . . . . . : 00-16-CF-6D-1A-CA
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.1.102
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 216.169.160.2
66.109.229.4

C:\Documents and Settings\TheVrolok>

Non-functioning Machine: Frenzy (desktop)

C:\Users\TheVrolok>nbtstat -n

Local Area Connection 2:
Node IpAddress: [0.0.0.0] Scope Id: []

No names in cache

Local Area Connection:
Node IpAddress: [192.168.1.101] Scope Id: []

NetBIOS Local Name Table

Name Type Status
---------------------------------------------
FRENZY <00> UNIQUE Registered
WORKGROUP <00> GROUP Registered
FRENZY <20> UNIQUE Registered

C:\Users\TheVrolok>ipconfig/all

Windows IP Configuration

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

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : NVIDIA nForce Networking Controller
Physical Address. . . . . . . . . : 00-1D-60-63-81-B1
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::3dd7:2b29:4f4:9f2e%8(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.101(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 216.169.160.2
66.109.229.4
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter Local Area Connection* 6:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.{55FF9593-F7C8-4B01-9F75-9B62D22ED
BB8}
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::5efe:192.168.1.101%12(Preferred)
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 216.169.160.2
66.109.229.4
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter Local Area Connection* 9:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

C:\Users\TheVrolok>

[johnwill]

Let's start with a 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.

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 that doesn't do it, try the following fixes.

Changes that may help to increase the compatibility of Vista with older networking devices:



Disable the IP Helper service:

1. Hold the Windows key and type R, enter "services.msc" (without the quotes) and press Enter
2. Scroll down to the IP Helper service, right click on it and select Properties
3. In the dropdown box that says "Automatic" or "Manual", set it to Disabled and then click on "Apply"
4. Then click on "Stop" to stop the service from running in the current session
5. Click OK to exit the dialog



Disable IPv6:

1. Hold the Windows key and type R, enter "ncpa.cpl" (without the quotes) and press Enter
2. Right click on each network connection and select "Properties"
3. Remove the checkmark from the box next to "Internet Protocol Version 6 (TCP/IPv6)
4. Click OK to exit the dialog

NOTE: You should do this for each network connection.



Disable the DHCP Broadcast Flag:

Link: http://support.microsoft.com/default.aspx/kb/928233

1. Hold the Windows key and type R, enter regedit and press Enter.
2. Locate and then click the following registry subkey:
3. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{GUID}
4. In this registry path, click the (GUID) subkey to be updated.
5. If the key DhcpConnForceBroadcastFlag does not exist, use the Edit menu, point to New, and then click DWORD (32-bit) Value. In the New Value #1 box, type DhcpConnForceBroadcastFlag, and then press ENTER. If the key exists, skip this step.
6. Right-click DhcpConnForceBroadcastFlag, and then click Modify.
7. In the Value data box, type 0, and then click OK.
8. Close Registry Editor.

NOTE: You should do this for each and every GUID subkey.
NOTE2: (GUID) is a mnemonic for the individual subkeys, the actual text "GUID" does not appaer.




The only program I'm aware of that currently relies on IPv6 is the new Windows Meeting Space. The first 2 changes will cause that program not to work - but will leave all of your normal (IPv4) connections unaffected. If it causes problems that you can't overcome, simply revert back to the original settings.