HP Compaq dc7100 DT Technical Reference Manual page 172

Error Messages and Codes
Error Message
1794-Inaccessible devices
attached to SATA 1 and/or SATA 3
(for systems with 4 SATA ports)
1796-SATA Cabling Error
1801-Microcode Patch Error
1998-Master Boot Record Backup
Has Been Lost
1999-Master Boot Record Has
Changed. Press Any Key To Enter
Setup to Restore the MBR.
2000-Master boot Record hard
drive has changed
Invalid Electronic Serial Number
Network Server Mode Active and
No Keyboard Attached
Parity Check 2
A-4
Table A-2. (Continued)
Power-On Self Test (POST) Messages
Probable Cause
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
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.
A processor is installed for which the BIOS ROM has no patch. Check
for ROM update.
Backup copy of the hard drive master boot record is corrupted. Use
Setup to restore the backup from the hard drive.
If Master Boot Record Security is enabled, this message indicates that
the MBR has changed since the backup was made.
The hard drive has been changed. Use Setup to create a backup of the
new hard drive.
Electronic serial number has become corrupted.
Keyboard failure while Network Server Mode enabled.
Keyboard failure while Network Server Mode enabled.
361834-002 Technical Reference Guide