Troubleshooting Scenarios And Solutions; Solving Minor Problems - HP Z1 G3 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.

Solving 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 turned off
automatically and the power
LED flashes red four times with
long beeps, followed by two
short beeps, while LED flashes
with short beeps, and pattern
repeats.
System does not turn on, and
the LEDs on the side of the
computer are not flashing.
52 Chapter 4 Diagnostics and troubleshooting
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 heat sink is not
properly attached to
the processor.
System cannot turn on.
Possible Solution
Press and hold the power button for at least four seconds
1.
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 Windows Device Manager to disable the network
controller.
Press Num Lock. The Num Lock
in Computer Setup (F10) Utility.
1. Verify that airflow to the computer is not blocked.
2. For models using Intel HD graphics, remove the access
panel and verify the air duct is properly installed at the
top of the chassis.
3. Verify that chassis fans are connected and working
properly. Some fans operate only when needed.
4. Verify that the processor heat sink 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.
For models using Intel HD graphics, remove the access
2.
panel and verify the air duct is properly installed at the
top of the chassis.
3. Remove the access panel and press the computer power
button.
4. Verify that the system fan is running.
5. Verify that the processor heat sink fan spins. If the fan is
not spinning, verify that the heat sink fan cable is plugged
into the system board connector and that the heat sink is
properly seated.
6. Replace the processor heat sink.
Press and hold the power button for less than four seconds. If
the power LED illuminates, then perform the following steps.
1. To find a faulty device, remove all devices one at a time:
key can be disabled or enabled