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A Error Messages and Indicators
Desktop Board DG965RY reports POST errors in two ways:
• By sounding a beep code
• By displaying an error message on the monitor
BIOS Beep Codes
The BIOS also issues a beep code (one long tone followed by two short tones) during
POST if the video configuration fails (a faulty video card or no card installed) or if an
external ROM module does not properly checksum to zero.
Table 13 lists the BIOS
codes.
Table 13. Beep Codes
Beep Description
3 No memory
Siren Processor overheat (on reboot)
BIOS Error Messages
When a recoverable error occurs during the POST, the BIOS displays an error message
describing the problem.
Table 14 gives an explanation of the BIOS error messages.
Table 14. BIOS Error Messages
Error Message Explanation
PROCESSOR_THERMAL_TRIP_ERROR
Processor was previously shutdown due to a thermal
event (overheating).
MULTI_BIT_ECC_ERROR
The firmware has detected that a Multi-Bit ECC Error
occurred.
SINGLE_BIT_ECC_ERROR
The firmware has detected that a Single-Bit ECC Error
occurred.
CMOS_BATTERY_ERROR
The firmware has detected that a CMOS battery failure
occurred.
CMOS_CHECKSUM_ERROR
The firmware has detected that a CMOS Checksum Error
occurred.
CMOS_TIMER_ERROR
The firmware has detected that the system date/time
has not been set.
MEMORY_SIZE_DECREASE_ERROR
The firmware has detected that the system memory has
decreased.
INTRUDER_DETECTION_ERROR The system chassis was opened.
SPD_TOLER_ERROR
SERIAL PRESENCE DETECT (SPD) device data missing or
inconclusive. Properly programmed SPD device data is
required for reliable operation. DDR2 533 MHz memory
assumed at slowest timings.
MEM_OPTIMAL_ERROR
The installed amount of memory in Channel A is not
equal to the amount of memory in Channel B. Maximum
memory performance is achieved with equal amounts of
memory installed in each channel.