try in safemode with networking
as the PC starts tap F8 a menu appears - choose safemode with networking
post back if that works
what security suite / firewall do you have on the PC or ever had in the past - Norton, mcafee etc
try a tcp/ip reset
------------------------------------------------------------------------
TCP/IP stack repair options for use with Vista/Windows 7.
Start, Programs\Accessories and right click on Command Prompt, select "Run as Administrator" to open a command prompt.
Note: Type only the text in bold for the following commands.
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 you receive the message
The requested operation requires elevation.
Then please open the command prompt as administrator - as requested above
Start, Programs\Accessories and right click on Command Prompt, select "Run as Administrator" to open a command prompt.
Post back the results here - we need to know these commands worked correctly
rightclick in the box
select all
enter
control key + C key - to copy
then reply here and
control key + V to paste
------------------------------------------------------------------------