Answer:
Lan cable was disconnected or unplugged from jordan's PC
Step-by-step explanation:
According to the scenario, no user other than Jordan has reported the problem which means that there was no issue in the network or server.
As IP address ping of 127.0.0.1 was successful means that the configuration of the IP address was also correct and the DHCP server was working correctly.
After all assessment one of the main cause could be the disconnection of the LAN cable from Jordan's computer.