First of all, disable and re-enable the connection. When you change the IP address from automatic to a fixed IP address while the adapter is not connected, you always get a 0.0.0.0 address at first when the adapter reconnects. If this doesn't solve the problem, read on.

Symptoms:

• You cannot obtain an IP address from the DHCP server. The IP address is 0.0.0.0.
• The DHCP service is not running, although it is set to Start Automatic.
• When you try to start the DHCP service, you get the error message: Could not start the DHCP Client Service on Local Computer. Error 1075: The dependency service does not exist or has been marked for deletion.

This problem can occur after uninstalling Norton AntiVirus, which sets the DHCP service as depending on itself. It can also occur when the computer name of the client computer is too long. Make sure that all computer names in your network are no longer than 15 characters.

First set a restore point, so you can undo your changes, should anything go wrong (Programs, Accessories, System programs, System restore).

After setting the restore point, to remove this dependency, do this:

• Click: Start

• Click: Run...

• Type: regedit

• Click: OK

• Navigate to the following keys in the registry:
  HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\DHCP
  HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\NetBT

• For each of these, on the right side, double-click: DependOnService

• Delete any lines containing either SYMTDI or NISDRV.

• Click: OK

• Close the Registry Editor.

• Reboot.