Acer Altos R920 Series - Manual (Page 149)

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Error Manager menu
The Error Manager menu lets you view the system POST errors
detected by the system.
Parameter Description Attribute
Error Code Displays the POST error beep codes.
Severity Major severity requires user intervention
but does not stop system boot.
Minor severity do not require user
intervention or stop the booting of the
system.
Fatal severity requires user intervention
and prohibits the system boot.
Major
Minor
Fatal
Instance Displays the instance value. The instance value identifies
the component in error.