It has been reported that on certain hardware configuration it is possible that DSS V7 will not boot stopping on loading screen or rebooting after a while. To solve this issue it is necessary to mount boot medium in any other operating system to access files on it and copy files:
Small Update for V7: 70112
\bxxxx\modules on DSS V7 boot medium (xxxx -> meaning build number)
If the problem is as speculated it should be now possible to boot from modified medium. If issue still exists please contact our support team.