Troubleshooting Guide

Troubleshooting Guide www.hp.com A–11
POST Error Messages
1794-Inaccessible
devices attached to
SATA 1 and/or
SATA 3
(for systems with 4
SATA ports)
A device is attached to
SATA 1 and/or SATA 3.
Devices attached to these
connectors will be
inaccessible while “SATA
Emulation” is set to
“Combined IDE
Controller” in Computer
Setup.
1. If using Windows 2000 or Windows
XP, change “SATA Emulation” to
“Separate IDE Controller” in
Computer Setup.
2. If not using Windows 2000 or
Windows XP, relocate the affected
devices to SATA 0 or SATA 2 (if
available).
3. Remove the affected devices from
SATA 1 and SATA 3.
1794-Inaccessible
device attached to
SATA 1
(for systems with 2
SATA ports)
A device is attached to
SATA 1. Any device
attached to this
connector will be
inaccessible while “SATA
Emulation” is set to
“Combined IDE
Controller” in Computer
Setup.
1. If using Windows 2000 or Windows
XP, change “SATA Emulation” to
“Separate IDE Controller” in
Computer Setup.
2. If not using Windows 2000 or
Windows XP, relocate the affected
device to SATA 0 (if available).
3. Remove the affected device from
SATA 1.
1796-SATA Cabling
Error
One or more SATA
devices are improperly
attached. For optimal
performance, the SATA 0
and SATA 1 connectors
must be used before
SATA 2 and SATA 3.
Ensure SATA connectors are used in
ascending order. For one device, use
SATA 0. For two devices, use SATA 0 and
SATA 1. For three devices, use SATA 0,
SATA1, and SATA 2.
1800-Temperature
Alert
Internal temperature
exceeds specification.
1. Check that computer air vents are not
blocked and the processor cooling
fan is running.
2. Verify processor speed selection.
3. Replace the processor.
4. Replace the system board.
Numeric Codes and Text Messages (Continued)
Code/Message Probable Cause Recommended Action