HP Z440 Workstation Series Maintenance And Service Manual page 8

4 Diagnostics and troubleshooting .................................................................................................................. 76
Calling support ..................................................................................................................................................... 76
Locating ID labels ................................................................................................................................................ 77
Locating warranty information ........................................................................................................................... 77
Diagnosis guidelines ............................................................................................................................................ 78
Troubleshooting checklist ................................................................................................................................... 79
HP troubleshooting resources and tools ............................................................................................................ 79
Troubleshooting scenarios and solutions ........................................................................................................... 82
Using HP PC Hardware Diagnostics (UEFI) .......................................................................................................... 90
Diagnostic codes and errors ................................................................................................................................ 91
5 Configuring password security and resetting CMOS ........................................................................................ 98
Preparing to configure passwords ...................................................................................................................... 98
Resetting the password jumper .......................................................................................................................... 99
Clearing and resetting the CMOS ....................................................................................................................... 100
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HP Z440 Workstation system cabling .......................................................... 73
HP Z640 Workstation system cabling .......................................................... 74
HP Z840 Workstation system cabling .......................................................... 75
Diagnosis at startup .......................................................................................................................... 78
Diagnosis during operation ............................................................................................................... 78
Online support ................................................................................................................................... 79
Troubleshooting a problem ............................................................................................ 79
Instant Support and Active Chat ..................................................................................... 80
Customer Advisories, Customer and Security Bulletins, and Customer Notices ........... 80
Product Change Notifications ......................................................................................... 80
Helpful hints ...................................................................................................................................... 80
At startup ........................................................................................................................ 80
During operation ............................................................................................................. 81
Customer Self-Repair program ...................................................................................... 81
Solving minor problems .................................................................................................................... 82
Solving hard drive problems ............................................................................................................. 84
Solving display problems .................................................................................................................. 85
Solving audio problems .................................................................................................................... 87
Solving printer problems .................................................................................................................. 88
Solving power supply problems ....................................................................................................... 88
Testing power supply ..................................................................................................... 88
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device .................................................. 90
Diagnostic LED and audible (beep) codes ......................................................................................... 91
LED color definitions ......................................................................................................................... 93
POST error messages ........................................................................................................................ 93