Type: This is a 'Warning' message (Orange highlight).

Source: This originates from the Vector device itself. 

Symptoms: Device may be operational dependent on the firmware version, but maybe be in a constant watchdog restart state, intermittently going offline and back online again, as the device continually attempts to fix itself by performing reboots. 

Cause: Vectors will always boot from a micro SD card and the card must always be present in order to do this as well as save things like validation recordings on to. If a card is removed either un purpose, or by accident, or because the card fails, the Vector will attempt to use much slower internal flash (nor) storage instead, and this message will be shown.

Fix: Because the error relates to the SD card, it should first be established the the SD card is indeed present and has not been accidentally disturbed and released from its card slot. a Reseat of any present SD card should be performed to ensure a good connection.

If the card is present but the error remains, first try a reboot to see if the device now boots up successfully. If the error remains, or anther error relating to the SD card occurs, the card itself will need either re-imaging, or replacing and imaging. See this section for details of the imaging procedure,