HP ProDesk 600 G4 SFF Maintenance And Service Manual page 7

7 POST error messages and diagnostic front panel LEDs and audible codes ................................................................................. 85
POST numeric codes and text messages ........................................................................................................................... 85
Interpreting system validation diagnostic front panel LEDs and audible codes .......................................................... 90
8 Password security and resetting CMOS .............................................................................................................................................. 92
Resetting CMOS and/or the password jumper .................................................................................................................. 93
Changing a Setup or Power-on password ......................................................................................................................... 95
Deleting a Setup or Power-on password ........................................................................................................................... 95
9 Using HP PC Hardware Diagnostics (UEFI) .......................................................................................................................................... 96
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device ............................................................................... 97
10 System backup and recovery ............................................................................................................................................................. 98
Backing up, restoring, and recovering ................................................................................................................................ 98
Creating recovery media and backups ........................................................................................................... 98
Using Windows tools ...................................................................................................................................... 100
Restore and recovery ..................................................................................................................................... 100
Appendix A Battery replacement .......................................................................................................................................................... 103
Appendix B Statement of memory volatility ....................................................................................................................................... 106
Current BIOS steps ............................................................................................................................................................... 106
Nonvolatile memory usage ................................................................................................................................................ 108
Questions and answers ...................................................................................................................................................... 110
Using HP Sure Start ............................................................................................................................................................. 111
Appendix C Power cord set requirements ........................................................................................................................................... 112
General requirements ......................................................................................................................................................... 112
Japanese power cord requirements ................................................................................................................................. 112
Country-specific requirements .......................................................................................................................................... 113
Appendix D Specifications ...................................................................................................................................................................... 114
Creating HP Recovery media (select products only) ............................................................... 99
Recovering using HP Recovery Manager ................................................................................ 101
What you need to know before you get started ............................................... 101
Using the HP Recovery partition (select products only) .................................. 101
Using HP Recovery media to recover .................................................................. 102
Changing the computer boot order .................................................................... 102
Removing the HP Recovery partition (select products only) .......................... 102
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