Customizing The Monitor Display; Troubleshooting Scenarios And Solutions; Solving Minor Problems - HP Z400 - Workstation Maintenance And Service Manual

Customizing the monitor display

You can manually select or change the monitor model, refresh rates, screen resolution, color settings,
font sizes, and power management settings. To do so, right-click the desktop, then click Properties to
change display settings. For more information, see the online documentation provided with the graphics
controller utility or the documentation that came with your monitor.

Troubleshooting scenarios and solutions

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

Solving minor problems

Table 6-1
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.
146 Chapter 6 Diagnostics and troubleshooting
Minor problems
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
Processor is hot.
Hard drive is full.
Possible Solution
1. Press and hold the power button for at least four
seconds until the workstation shuts down.
2. Disconnect the electrical plug from the outlet.
3. Restart the workstation.
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 workstation 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 the Computer Setup
(F10) Utility or the Microsoft Windows Device Manager to
disable the network controller.
key might be on. Press Num
enabled in the Computer Setup (F10) Utility.
1. Verify that airflow to the workstation 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.
Lock. The Num Lock key can be disabled or
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