Having problems with installer, which is strange as Release Preview 8400 worked fine.
Made a USB and DVD (verified) using the assistant.
USB doesn't boot, but is seen in BIOS.
Files/directories on USB:
<dir>boot
<dir>efi
<dir>sources
<dir>support
autorun.inf
bootmgr
bootmge.efi
mediameta.xml
setup.exe
Only options in BIOS for DFI LanParty Juniour P45-T2RS are boot from USB-ZIP, USB-Floppy, USB-CDROM; and changing mode of memory stick from auto to FDD or HDD.
The DVD loads with the new Windows logo then switches to a blank purplish screen with mouse cursor only.