Troubleshooting Scenarios And Solutions; Solving Minor Problems - HP Z1 Maintenance And Service Manual

Troubleshooting scenarios and solutions

This section presents an extensive overview of various troubleshooting scenarios and possible
solutions for a Windows-based computer.
NOTE: For Linux troubleshooting information, refer to the
http://www.hp.com/support/linux_user_manual.

Solving minor problems

Table 4-1 Minor problems
Problem
Workstation appears frozen
and does not shut down
when the power button is
pressed.
Workstation seems to be
frozen.
Workstation date and time
display is incorrect.
Workstation appears to
pause periodically.
Cursor does not move using
the arrow keys on the
keypad.
Poor performance is
experienced.
Workstation powered off
automatically and the Power
LED flashes red two times
(once per second), followed
by a two second pause, and
then two consecutive beeps.
System does not power on,
and the LEDs on the side of
the computer are not
flashing.
Cause
Software control of the
power switch is not
functional.
Program in use has
stopped responding to
commands.
Real-time clock (RTC)
battery might need
replacement.
Network driver is loaded
and no network connection
is established.
The Num Lock key
might be on.
Processor is hot.
Hard drive is full.
Processor thermal
protection is activated.
A fan might be blocked
or not turning.
OR
The processor heatsink is
not properly attached to
the processor.
System cannot power on.
HP Workstations for Linux User Manual
Possible Solution
1. Press and hold the power button for at least four
seconds until the computer shuts down.
2. Disconnect the electrical plug from the outlet.
1. If possible, use the Windows Task Manager to isolate
and terminate the offending process.
2. Attempt the normal Windows shutdown procedure.
3. Restart the computer using the power button.
1. Reset the date and time in the Control Panel.
2. Replace the RTC battery.
Establish a network connection, or use Computer Setup
(F10) Utility or the Microsoft® Windows® Device Manager
to disable the network controller.
Press Num Lock. The Num Lock key can be disabled or
enabled in Computer Setup (F10) Utility.
1. Verify that airflow to the computer is not blocked.
2. Verify that chassis fans are connected and working
properly. Some fans operate only when needed.
3. Verify that the processor heatsink is installed
properly.
Transfer data from the hard drive to create more space on
the hard drive.
1. Verify that the computer air vents are not blocked.
2. Open the access panel and press the computer
power button.
3. Verify that the system fan is running.
4. Verify that the processor heatsink fan spins. If the fan
is not spinning, verify that the heatsink fan cable is
plugged into the system board connector and that the
heatsink is properly seated.
5. Replace the processor heatsink.
Press and hold the power button for less than four
seconds. If the hard drive LED turns green, then perform
the following steps.
Troubleshooting scenarios and solutions
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