This event is written during startup following an unexpected restart or shutdown. This can be due to one of the hardware component is malfunctioning in your system.
Check if your CPU is overheating. You can check the CPU temperature using any third-party app. If on a desktop computer, check if the Sink fan is working.
Try to clean the heat sink fan by removing the dirt using compressed air.
You need to also check your power supply unit (PSU) for any malfunction. If you have older PSU running on modern hardware, it can create power issues and the system may shut down to prevent any damage to the hardware component.
Also, check the system event log for other events that occurred around the same time as the unexpected shutdown.