Screen Message Probable Cause Recommended Action
1155–Serial Port
Address Conflict
Detected.
Both external and internal
serial ports are assigned to
same IRQ.
1. Remove any COM port expansion
cards.
2. Clear CMOS by pressing the Clear
CMOS button on the system board.
3. Reconfigure card resources and run
Computer Setup (F10 Setup).
4. Run Computer Setup or Windows
utilities.
1201–System Audio
Address Conflict
Detected
Device IRQ address conflicts
with another device. (Usually
due to an add-in audio card.)
Reset the IRQ.
1720 SMART Hard Drive
Detect Imminent Failure
Hard drive is about to fail.
(Some hard drives have a
firmware patch that will fix an
erroneous error message.)
CAUTION: Disconnect AC power from the
workstation before reseating or replacing
components because there is power to the
system board even when the workstation is
powered down.
1. Determine if hard drive is giving correct
error message.
2. Run the Drive Protection System test if
applicable.
3. Apply firmware patch if applicable
(see
http://www.hp.com/support).
4. Back up contents and replace hard
drive.
1800–Temperature Alert Internal temperature exceeds
specification.
CAUTION: Disconnect AC power from the
workstation before reseating or replacing
components because there is power to the
system board even when the workstation is
powered down.
1. Check that workstation air vents are not
blocked and that the cooling fan is
running.
2. Verify processor speed selection.
3. Replace the processor.
4. Replace the system board.
1801–Microcode Update
Error
Missing or Invalid Processor
Microcode Update.
Upgrade BIOS to the current version.
1802–CPU0 Not
Supported
The system board does not
support the processor.
CAUTION: Disconnect AC power from the
workstation before reseating or replacing
components because there is power to the
system board even when the workstation is
powered down.
Replace the processor with a compatible
one.
Table 6-18 POST error messages (continued)
166 Chapter 6 System diagnostics and troubleshooting ENWW
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