With Virtualbox uninstalled try ipconfig/release and ipconfig/flushdns. If this doesn't resolve matters try switching your openDNS servers to another one, might be worth entering your router's IP for the second DNS (192.168.1.254) therefore using your router's selected DNS servers instead. If still no joy try a tracert.
As I've pointed out in your other thread that you created, it would be better to re-install the network drivers. Virtualbox often makes changes to the network driver settings and even uninstalling Virtalbox will not get the default settings back, only a complete driver re-install will.