Chassis Indicator LEDs
Power LED and Sound
Activity
Diagnosis and Service Action
System board failure (ROM detected failure before video).
1. Clear CMOS.
2. Replace system board.
Blinks red 8 times, once per
second, then 2 second pause,
8 beeps
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.
Invalid ROM based on bad checksum.
1. Clear CMOS.
2. Upgrade the ROM using a ROMPaq diskette, CD, diskette, or USB removable device
(e.g., HP Drive Key). See the ROM Flash section of the Service and Technical Reference
Guide at
http://www.hp.com/support/workstation_manuals.
3. Replace system board.
Blinks red 9 times, once per
second, then 2 second pause, 9
beeps
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.
System powers on but is unable to boot.
1. Replace the system board.
2. Replace the processor.
* Refer to the Service and Technical Reference Guide for your workstation for BIST information.
Troubleshooting scenarios and solutions
This section presents an extensive overview of various troubleshooting scenarios and includes possible
solutions for each.
Solving minor problems
Table 5-3 Minor problems
Problem Cause Possible Solution
Workstation appears locked
up and will not turn off when
the power button is pressed.
Software control of the power
switch is not functional.
1. Press and hold the power button for at least four
seconds until the workstation turns off.
2. Disconnect electrical plug from outlet.
Workstation seems to be
locked up.
Program in use has stopped
responding to commands.
1. Attempt the normal Windows shut down procedure.
2. Restart the workstation using the power button.
Workstation date and time
display is incorrect.
Real-time clock (RTC) battery
might need to be replaced.
1. Reset the date and time under Control Panel.
2. Replace the RTC battery.
Workstation appears to pause
periodically.
Network driver is loaded and no
network connection is
established.
Establish a network connection, or use Computer Setup or
Microsoft Windows Device Manager to disable the network
controller.
Cursor will not move using the
arrow keys on the keypad.
The Num Lock key might be on. Press Num Lock. The Num Lock key can be disabled (or
enabled) in Computer Setup.
Table 5-2 Diagnostic LED codes (continued)
ENWW Troubleshooting scenarios and solutions 109
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