Click Start, [click Run], type regedit, and then press ENTER.
Locate and then click the following registry subkey:
Right-click this subkey, click Export , and then save the selected branch in a file.
Click the Network subkey again, and then delete the Config entry. Do not delete the >Network subkey. The Config entry will be reconstructed when you restart the computer.
Restart the computer. You may have to manually turn off the computer.
The config key is re-created on the next boot up.