Re: Unable to Ping

That would be your best strategy. Uninstall ICS and remove your TCP/IP
settings from network manager and your NIC from Device manager then reboot.
Install your NIC again on reboot. Configure your network to the same IP
number range and subnet as the other PC's on the LAN. Share a folder to make
it available to the other PC's on the LAN. Reboot and
after a successful configuration you should now have a PPP adapter, a TCP/IP
adapter. Test it's access and then install ICS again as per usual.