What does the “Power Cut Reset” message mean?

This indicates that there has been an interruption to the power supply to the device.

If you are using batteries

Ensure you are using Duracell batteries, and replace the full set when the device reaches 10% power or less. If the issue persists, try using a power supply instead. 

If you are using a power supply

First, try a different plug socket. If this does not resolve the issue, switch to batteries. If the batteries work correctly, then test with an alternative power supply.