According to Microsoft,
This behavior occurs when the following conditions are true:

• You are using the Key Management Service (KMS) to perform activation.
• The computer uses an ACPI_SLIC table in the computer BIOS program.

This problem occurs if the KMS server does not find a valid Windows marker in the ACPI_SLIC table in the computer's BIOS program. This problem occurs for one of the following reasons.

Cause 1

You purchased a computer that has a qualifying Windows operating system installed. However, the Windows marker in the ACPI_SLIC table is corrupted.

Cause 2

You purchased a computer that does not have a qualifying Windows operating system installed. In this case, the Windows marker is not present in the ACPI_SLIC table.

The Microsoft Campus agreement includes Windows Upgrade licenses. This means the computer must have a qualifying operating system.  If you know the computer you are attempting to activate did have a qualifying operating system you may use the Microsoft MAK key for your version of Windows as an alternate activation method.

The Microsoft MAK keys are part of the Microsoft Desktop Package (Windows and Office) for UI IT Professionals License & Download offer on WebStore. The keys are located in the section down below the download links.

WebStore