A Error Messages and Indicators
Desktop Board D975XBX2 reports POST errors in two ways:
•By sounding a beep code
•By displaying an error message on the monitor
BIOS Beep Codes
The BIOS beep codes are listed in Table 10. The BIOS also issues a beep code (one long tone followed by two short tones) during POST if the video configuration fails (a faulty graphics card or no card installed) or if an external ROM module does not properly checksum to zero.
Table 10. 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 11. BIOS Error Messages
Error Message | Explanation |
PROCESSOR_THERMAL_TRIP_ERROR | Processor was previously shut down due to a thermal |
| event (overheating). |
MULTI_BIT_ECC_ERROR | The firmware has detected that a |
| occurred. |
SINGLE_BIT_ECC_ERROR | The firmware has detected that a |
| 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. |
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