ggRock Client Machine boot stuck on "No DHCP or proxyDHCP offers were received."

Problem

The following error appears on bootup:

PXE-E51: No DHCP or proxyDHCP offers were received.

Solution 1

Issue presents on a single computer

1. Power off the computer.
2. Attempt booting again.

Solution 2

Issue presents on multiple computers

1. Reboot switch/router/server that is acting as a DHCP server.
2. Attempt booting again.