Hit F2 to get into the BIOS. This then shows this screen:
BIOS Screen.
Selecting the "Boot Order" option gets you to:
BIOS Boot Options.
The operating system is eLux NG. (Support now migrated to unicon-software) It comes with unlicenced software that you can run with full functionality 38 times before it goes on strike. To circumvent this you need to purchase a valid licence - or replace eLux NG by something of your own!