in the host pc try lifting it out of the slot and replacing it. I had a similar problem and still cannot understand how it could work between the 2 pcs but not connect to the net. Just reseating it did the trick. I should add I went into device manager and uninstalled the card before shutting down. When I rebooted it had reinstalled it and all now worked ok. I had tried uninstalling it before and just rebooting but it was only after reseating it that it worked ok.