The error PXE-E61 Media Test Failure can occur at boot if all the following are true:
- Boot to Network (or Boot to LAN) is enabled in BIOS Setup.
- A network cable/connection is not present.
- Network Boot is listed in the boot order above any other boot device.
To resolve this error, change the boot drive order in BIOS Setup:
- Press F2 during boot to enter BIOS Setup.
- Go to the Boot menu.
- Enable the option Boot Network Devices Last.
- Press F10 to save and exit the BIOS Setup.