HP Xw8400 HP xw8400 Service and Technical Reference Guide - Page 140

POST error messages, continued, Run Computer Setup or Windows utilities.

Page 140 highlights

Table 5-18 POST error messages (continued) Screen Message Probable Cause Recommended Action 931-Northbound CRC error on CRC error occurred. This could be due Try replacing or reseating DIMMs first, then system non-redundant retry to a faulty system board, memory, or board. BIOS issue. 932-Alert on non-redundant retry Alert present on retry. Try replacing or reseating DIMMs first, then system board. 945-FBD northbound CRC error Try replacing or reseating DIMMs first, then system board. 946-Correctable patrol data ECC error Bad DIMM or improperly installed DIMM Try reseating the DIMMs and make sure that they are inserted correctly. If the problem persists, remove or replace the DIMMs one by one until the problem DIMM is isolated. 949-Correctable non-mirrored Bad DIMM or improperly installed demand data ECC error DIMM Try reseating the DIMMs and make sure that they are inserted correctly. If the problem persists, remove or replace the DIMMs one by one until the problem DIMM is isolated. 950-Redundant retry FBD northbound CRC error Try replacing or reseating DIMMs first, then system board. 953-Non-aliased uncorrectable patrol data ECC error Double bit ECC error due to bad DIMM or improperly installed DIMM Try reseating the DIMMs and make sure that they are inserted correctly. If the problem persists, remove or replace the DIMMs one by one until the problem DIMM is isolated. 956-Non-aliased uncorrectable Bad DIMM or improperly installed non-mirrored demand data DIMM ECC error Try reseating the DIMMs and make sure that they are inserted correctly. If the problem persists, remove or replace the DIMMs one by one until the issue is resolved. 960-CPU Overtemp occurred. The ambient temperature could exceed operating limits (maximum = 95° F), or there are obstructions to airflow, including dust build up. 1. Be sure you are not operating the system in an environment that exceeds 95° F. 2. Disconnect power and open the access panel. 3. Check that cables are not blocking CPU heatsink fans or front fan, if installed. 4. Check that there is not excessive dust on major components. 5. If airflow is acceptable and there is not excessive dust, the thermal sensing circuitry has failed on the processors or on the system board. You must replace the processors, the system board, or both. 961-Uncorrectable data ECC Bad DIMM or improperly installed on replay error DIMM Try reseating the DIMMs and make sure that they are inserted correctly. If the problem persists, remove or replace the DIMMs one by one until the problem DIMM is isolated. 1151-Serial Port 1 Address Conflict Detected. Both external and internal serial ports 1. are assigned to COM1. 2. Remove any COM port expansion cards. Clear CMOS. 3. Reconfigure card resources and run Computer Setup (F10 Setup). 4. Run Computer Setup or Windows utilities. 130 Chapter 5 System diagnostics and troubleshooting ENWW

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Screen Message
Probable Cause
Recommended Action
931–Northbound CRC error on
non-redundant retry
CRC error occurred. This could be due
to a faulty system board, memory, or
BIOS issue.
Try replacing or reseating DIMMs first, then system
board.
932–Alert on non-redundant
retry
Alert present on retry.
Try replacing or reseating DIMMs first, then system
board.
945-FBD northbound CRC
error
Try replacing or reseating DIMMs first, then system
board.
946-Correctable patrol data
ECC error
Bad DIMM or improperly installed
DIMM
Try reseating the DIMMs and make sure that they are
inserted correctly. If the problem persists, remove or
replace the DIMMs one by one until the problem DIMM
is isolated.
949-Correctable non-mirrored
demand data ECC error
Bad DIMM or improperly installed
DIMM
Try reseating the DIMMs and make sure that they are
inserted correctly. If the problem persists, remove or
replace the DIMMs one by one until the problem DIMM
is isolated.
950-Redundant retry FBD
northbound CRC error
Try replacing or reseating DIMMs first, then system
board.
953-Non-aliased uncorrectable
patrol data ECC error
Double bit ECC error due to bad DIMM
or improperly installed DIMM
Try reseating the DIMMs and make sure that they are
inserted correctly. If the problem persists, remove or
replace the DIMMs one by one until the problem DIMM
is isolated.
956-Non-aliased uncorrectable
non-mirrored demand data
ECC error
Bad DIMM or improperly installed
DIMM
Try reseating the DIMMs and make sure that they are
inserted correctly. If the problem persists, remove or
replace the DIMMs one by one until the issue is
resolved.
960–CPU Overtemp occurred.
The ambient temperature could
exceed operating limits (maximum =
95° F), or there are obstructions to
airflow, including dust build up.
1.
Be sure you are not operating the system in an
environment that exceeds 95° F.
2.
Disconnect power and open the access panel.
3.
Check that cables are not blocking CPU heatsink
fans or front fan, if installed.
4.
Check that there is not excessive dust on major
components.
5.
If airflow is acceptable and there is not excessive
dust, the thermal sensing circuitry has failed on the
processors or on the system board. You must
replace the processors, the system board, or both.
961-Uncorrectable data ECC
on replay error
Bad DIMM or improperly installed
DIMM
Try reseating the DIMMs and make sure that they are
inserted correctly. If the problem persists, remove or
replace the DIMMs one by one until the problem DIMM
is isolated.
1151–Serial Port 1 Address
Conflict Detected.
Both external and internal serial ports
are assigned to COM1.
1.
Remove any COM port expansion cards.
2.
Clear CMOS.
3.
Reconfigure card resources and run Computer
Setup (F10 Setup).
4.
Run Computer Setup or Windows utilities.
Table 5-18
POST error messages
(continued)
130
Chapter 5
System diagnostics and troubleshooting
ENWW