I have a strange problem with a Windows XP Professional SP3 PC. The PC is unable to ping any hosts either local or internet-based and reports 'Destination Host Unreachable'. The PC is able to browse the internet, send emails and connect to local devices such as routers that it cannot ping.
I have disabled the local (McAfee) firewall to no effect - other PC's in the same office use the same firewall with the same rules and have no problem.
The network settings are derived from DHCP which is fine for other PC's. I have tried manually setting the details to no effect, I have also tried a different address.
I have also tried resetting the TCP stack, clearing the ARP cache, running SFC /scannow and doing a Windows XP repair - all to no avail.
The network card is on the latest driver I can find - it's a Dell-suplied GVC Realtek.
I'm really scratching my head here. The PC is on a domain and, although it can login / be joined and removed from the domain, it won't process Group Policy as it can't locate a DC - I think because it can't ping anything.
Hope someone has an idea - my next port of call will be a complete rebuild but that seems like overkill.