Troubleshooting Scenarios And Solutions; Solving Minor Problems - HP Xw8400 - Workstation - 4 GB RAM User Manual

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
Workstation appears locked
up and will not turn off when
the power button is pressed.
Workstation seems to be
locked up.
Workstation date and time
display is incorrect.
Workstation appears to pause
periodically.
Cursor will 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 every second, followed
by a two-second pause, and
two simultaneous beeps are
heard.
System does not power on and
the LEDs on the front of the
workstation are not flashing.
ENWW
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 to be replaced.
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
activated:
A fan might be blocked or not
turning.
OR
The CPU heatsink is not properly
attached to the processor.
System unable to power on.
Possible Solution
1. Press and hold the power button for at least four
seconds until the workstation turns off.
2. Disconnect electrical plug from outlet.
1. Attempt the normal Windows shut down procedure.
2. Restart the workstation using the power button.
1. Reset the date and time under Control Panel.
2. Replace the RTC battery.
Establish a network connection, or use Computer Setup or
Microsoft Windows Device Manager to disable the network
controller.
Press Num Lock. The Num Lock key can be disabled (or
enabled) in Computer Setup.
1. Be sure airflow to the workstation is not blocked.
2. Be sure the fans are connected and working properly
(some fans only operate when needed).
3. Be sure the CPU heatsink is installed properly.
Transfer data from the hard drive to create more space on
the hard drive.
1. Be sure workstation air vents are not blocked and the
cooling fan is running.
2. Open the hood, press the power button, and determine
if the processor fan spins. If not spinning, be sure the
fan's cable is plugged into the system board header. Be
sure the fan is fully/properly seated or installed.
3. Replace the processor fan.
4. Reseat CPU heatsink and verify that the fan assembly
is properly attached.
Press and hold the power button for less than four seconds.
If the hard drive LED turns green, then:
1. Remove the expansion cards.
2. Replace the system board.
OR
Press and hold the power button for less than four seconds.
If the HDD LED does not illuminate, then:

Troubleshooting scenarios and solutions

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