I'm glad you discovered a solution for your problem.
For the benefit of less experienced users, perhaps you could provide a more detailed explanation of the steps you followed. I'm sure it would be appreciated.
Sorry - I realise this 'fix' is somewhat cryptic... Herewith some useful additional info:
I have found that when I install Norton Internet Security on a PC which is running a customised network (e.g. static Primary/Secondary/Gateway IP Addresses), this network configuration no longer works after the PC is re-started (as requested by the Norton installation procedure). I then found that using the NETSH command to reset the WINSOCK and TCPIP stacks to their default settings rectified the situation.
The NETSH (Network Shell) command is used to display or modify the configuration of the network settings on a Windows-based PC.
To access the NETSH command, you have to initiate a 'Command Prompt' dialogue as follows:
Click on : Start Click on : Run Type in : CMD Click on : OK
You can now enter various NETSH (and many other) commands via this Command Propmt dialogue...
The lines of text below can be copied and pasted into Notepad to create a script file which can be re-used as required. Alternatively, you can simply type in the lines which begins with netsh