M910 Watchdog timer expired error after server reboot

We have an M910, that has a Watchdog timer expired error which causes the health of the machine to be in critical condition.  The logs show that a graceful shutdown occurred 10 minutes before the machine threw the Watchdog timer expired error.  I don't see any other errors in the logs that would tell me that the machine is having problems.  How do I troubleshoot this issue to find out what is causing the Watchdog timer expired error?

Thanks.