To install a new OP5 System you need the OP5 Installation / Recovery CD. If you have not received the cd with the system you can download it as an .iso file from www.op5.com/download-op5-monitor and create a installation cd using your favorite cd-creation program.
Assure that you have console access by connecting a monitor and keyboard to the OP5 System.
Insert the OP5 Installation / Recovery CD and reboot the system (read more in the Administrative Tasks section). If the system already is powered off, simply power it on and insert the cd before the system bootup sequence has started.
Follow the instructions the on-screen instructions.