This situation has to do with a BIOS setting regarding which action to take following a loss of power. Generally there are three states. Off | On | Last State. Should your unit not power on following a power loss event and a manual power on operation be required please connect a keyboard and mouse to the appliance. Enter the BIOS and change the appropriate BIOS setting to “Always On” or “On”.
For any questions regarding how to change this please contact Highly Reliable Systems Technical Support. The type of unit you are using will be needed to ensure that you are given the proper information for your device.