...Press Esc key to resume booting without waiting for the system to cool.
WARNING: Pressing Esc is NOT recommended as the system may shutdown unexpectedly.
Audible Beeps: None
Possible Cause: The temperature measured by one of the system temperature sensors has exceeded acceptable levels. In many cases, this is due to the ambient inlet air temperature exceeding acceptable levels.
Action: Be sure to follow all of the environmental requirements for the server.
Only operate the server in a room where the temperature does not exceed the recommended temperature for the server.
For more information about the optimum environment for the server, see the server user guide on the HP website.