HP Z 440 Owners Manual

ActivityPossible causeRecommended action2.Check if a device is causing the problem by removing all 
attached devices (such as hard, diskette, or optical drives, and expansion cards.) Power on the computer. If the system enters  the POST, power 
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ActivityPossible causeRecommended actionPress and hold the power button for less than four seconds. If the hard drive LED turns white, then:
1.Remove the expansion cards one at a time and try holding the 
power button again for less than four seconds.
2.The problem might be on the system board. Contact HP for  assistance.
Press and hold the power button for less than four seconds. If the hard drive LED does not turn on white then:
1.Check that unit is plugged into a working AC outlet.
2.Open the access...

Screen messageProbable causeRecommended action214—DIMM Con

Screen messageProbable causeRecommended action518—PCI fan not detectedPCI fan missing, disconnected, or 
defective.1.Reseat the fan cable.
2.Reseat the fan.
3.Replace the fan.
519—Hard drive fan not 
detectedHard drive fan missing, disconnected, or 
defective.1.Reseat the fan cable.
2.Reseat the fan.
3.Replace the fan.
520—Memory fan (2) not 
detectedMemory fan (2) missing, disconnected, 
or defective.1.Reseat the fan cable.
2.Reseat the fan.
3.Replace the fan.
521—Memory fan (3) not 
detectedMemory...

Screen messageProbable causeRecommended action2.Reseat or replace the missing mechanism cable.922—Front USB 2 Not 
ConnectedFront USB 2 mechanism is missing or is 
not connected.1.Replace or reconnect the missing Front USB 2 
mechanism to the system board.
2.Reseat or replace the missing mechanism cable.
923—Fatal IRPP error. Potential system problem; contact HP Support.924—Fatal IIO error Potential system problem; contact HP Support.925—Fatal Misc. ErrorA fatal miscellaneous chipset error is...

5Using HP PC Hardware Diagnostics (UEFI)
HP PC Hardware Diagnostics is a 8ni

3.Enter the product name or number.
– or –
Select Identify now to let HP automatically detect your product.
4.Select your computer, and then select your operating system.
5.In the Diagnostic section,  follow the on-screen instructions to select and download the UEFI version 
you want.
Additional BIOS crisis recovery tool
HP provides a BIOS crisis recovery tool through the HP PC Hardware Diagnostics 3-in-1 USB key. This tool can 
be used by HP authorized service providers to recover systems that have...

6&on

Resetting the password jumper 
Use the following procedure to disable the power-on or setup password features and clear the power-on and 
setup passwords.
WARNING!To reduce the risk of personal injury from electrical shock and hot surfaces, be sure to 
disconnect the power cord from the wall outlet and allow the internal system components to cool before 
touching.CAUTION:When the computer is plugged in, the power supply has voltage applied to the system board, 
even when the computer is turned 
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