Screen message Probable cause Recommended action
1785—Multibay incorrectly
installed
No other IDE device may be attached
to the same IDE controller.
Attach the MultiBay as device 0 on the secondary IDE
controller.
1790—Disk 0 Error The drive is not installed correctly or
has failed.
1. Be sure that any jumpers are set correctly and that
power and drive cables are connected, both to the
drive and the system board.
2. Verify that the cables are the correct cables for
your computer model. If this message persists,
you may need service for your workstation.
1791—Disk 1 Error The drive is not installed correctly or
has failed.
1. Be sure that any jumpers are set correctly and that
power and drive cables are connected, both to the
drive and the system board.
2. Verify that the cables are the correct cables for
your computer model. If this message persists,
you may need service for your workstation
1792—Secondary Disk
Controller Failure
Hard drive circuitry error. 1. Run Computer Setup (F10 Setup).
2. Clear CMOS.
3. Verify cable seating/jumper settings.
4. Run hard drive diagnostics.
5. Disconnect additional drives.
6. Run the Drive Protection System test if available.
7. Replace the hard drive.
1793—Secondary Controller
or Disk Failure
Hard drive circuitry error. 1. Run Computer Setup (F10 Setup).
2. Clear CMOS.
3. Verify cable seating/jumper settings.
4. Run hard drive diagnostics.
5. Disconnect additional drives.
6. Run the Drive Protection System test if available.
7. Replace the hard drive.
1794—Inaccessible devices
attached to primary IDE
controller
Devices attached to the primary IDE
controller are inaccessible while the
SATA controller is set to “Replace
Primary IDE Controller” in Setup.
1. Run Computer Setup (F10 Setup).
2. Select Storage> Storage Options and set SATA
controller to Add as Separate Controller.
1800—Temperature Alert Internal temperature exceeds
specification.
1. Verify that workstation air vents are not blocked
and cooling fan is running.
2. Verify processor speed selection.
3. Replace the processor.
4. Replace the system board.
1801—Microcode Patch Error Processor not supported by ROM
BIOS.
Upgrade BIOS to proper version.
1802—Processor Not
Supported
The system board does not support the
processor.
Replace the processor with a compatible one.
1803-BIOS Update Needed for
Processor
This BIOS revision does not support
the installed processor.
Install the latest BIOS downloaded from
http://www.hp.com.
Table 5-18 POST error messages (continued)
ENWW POST and error messages 129
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