Mysterious “PXE-E61: Media test failure, check cable” error?

So someone asked me about seeing the following error message on their computer before the OS boots up:

For Realtek Ethernet Controller RTL8139 v2.12
PXE-E61: Media test failure, check cable
PXE-M0F: Exiting PXE ROM.

The solution is to go into your BIOS and locate your boot order. You likely have the network adapter before the hard drive. Place the hard drive before the network adapter and that’s that.

Questions, comments, and feedback are welcome.