When installing Windows Server 2012 R2 from a boot disk (created from an ISO) both a USB and a DVD version the install goes into an infinite reboot. This occurs right after "loading files" or the part immediately after "press any key to install from..." with the white bar at the bottom that has 2 phases the second much slower than the first.
The new blue logo appears and then an immediate reboot occurs. My licensing does not allow an upgrade and I cannot do a bare metal either. It may be hardware but the specs are well within the minimums. It should at least install.