Limited Internet Connectivity

Try the following in either order.

The NIC may be having difficulty negotiating a speed with the router. In Device Manager right click on the ethernet - Properties - Advanced tab - for the 'Speed & Duplex' property try several values beginning with '100 Mbps full duplex' and '10 Mbps full duplex.'

TCP/IP stack repair options for use with Windows XP with SP2 or SP3.

Start, Run, CMD, OK to open a command prompt.

Reset WINSOCK entries to installation defaults: netsh winsock reset catalog

Reset TCP/IP stack to installation defaults. netsh int ip reset reset.log

Reboot the machine.