Service Tag: <ADMIN NOTE: Service tag removed per privacy policy>

When I came home tonight and powered on my laptop, a strange thing happened.  I had no network.  I did this morning before I went to work, but not this evening!

I checked the adapter in device manager and The internal wired Ethernet adapter (Killer NIC) disappeared.  I enabled 'show hidden devices' and the adapter was grayed out and not activated.

After attempting to search for updated drivers, turning the adapter off and on in the bios and performing a system restore, nothing worked.  I tried to reinstall the card in device manager by removing it and scanning for hardware changes, and nothing happened.  It's as if the card disappeared completely.

I'm not sure what happened, but any assistance you could offer would be much appreciated.

Terry