A user reports that the computer cannot connect to the network. There are currently no other problems with the network. Which of the following should the technician do FIRST?

A.
Have the user unplug and replug the power cord from the computer and restart the computer.

B.
Tell the user that the network might be down and to try connecting later.

C.
Check that the network cable is correctly attached to the network interface card (NIC).

D.
Reboot the computer into safe mode and begin a System Restore.