How to fix Windows XP TCP/IP Networking

Symptom: No network access and ipconfig returns no information.

When Windows XP networking gets deeply wedged, you will be get no information from ipconfig.
From a command prompt, type:

ipconfig

If all you get back is:

Windows IP Configuration

Then your TCP/IP network stack not running.

Solution: Re-install TCP/IP.
To reinstall TCP/IP, follow these steps:

1. From a Windows Explorer, navigate to My Network Places.
2. Right-click and choose Properties.
3. Select Local Area Connection, right-click and choose Properties. If the Properties windows is empty, reboot and start over.
4. Click the Install… button, select Protocol from the list.
5. Click the Add… button.
6. Click the Have Disk… button.
7. Type in or click Browse… to select the file C:\WINDOWS\inf\nettcpip.inf, click OK
8. Select Microsoft from the left-hand list.
9. Select Internet Protocol (TCP/IP) from the right-hand list.
10. Click OK.
11. Click Close.
12. Reboot

After you reboot, you will have networking up and running again. Tested on Windows XP SP3.