A–8
www.hp.com
Troubleshooting Guide
POST Error Messages
916-Thermal Sensor
from Processor
Heatsink is not
Connected
Processor heatsink cable
not connected to system
board.
Reseat or replace the processor heatsink
cable going to the system board.
917-Expansion Riser
not Detected
Riser board not seated or
not installed.
Install riser board if missing or remove
and reseat to ensure good connection.
919-Front Panel,
Multi-Port, and/or
Multi-Bay Riser(s) not
Detected. Unplug
Machine and Install
Riser(s).
Riser card has been
removed or has not been
reinstalled properly in the
system.
Reinsert riser card.
1151-Serial Port A
Address Conflict
Detected
Both external and
internal serial ports are
assigned to COM1.
1. Remove any serial port expansion
cards.
2. Clear CMOS. (See
Appendix B,
“Password Security and Resetting
CMOS.”
)
3. Reconfigure card resources and/or
run Computer Setup or Windows
utilities.
1152-Serial Port B
Address Conflict
Detected
Both external and
internal serial ports are
assigned to COM2.
1. Remove any serial port expansion
cards.
2. Clear CMOS. (See
Appendix B,
“Password Security and Resetting
CMOS.”
)
3. Reconfigure card resources and/or
run Computer Setup or Windows
utilities.
Numeric Codes and Text Messages
(Continued)
Code/Message
Probable Cause
Recommended Action
