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Solving memory problems .................................................................................................................................. 70
Solving USB flash drive problems ........................................................................................................................ 72
Solving Internet access problems ....................................................................................................................... 72
Solving software problems .................................................................................................................................. 73
7 POST error messages and diagnostic front panel LEDs and audible codes ......................................................... 75
POST numeric codes and text messages ............................................................................................................. 75
Interpreting system validation diagnostic front panel LEDs and audible codes ................................................ 80
8 Password security and resetting CMOS .......................................................................................................... 82
Resetting the password jumper .......................................................................................................................... 82
Clearing and resetting the BIOS ........................................................................................................................... 84
9 Using HP PC Hardware Diagnostics ................................................................................................................ 85
Using HP PC Hardware Diagnostics Windows ..................................................................................................... 85
Downloading HP PC Hardware Diagnostics Windows ....................................................................... 85
Installing HP PC Hardware Diagnostics Windows ............................................................................. 86
Using HP PC Hardware Diagnostics UEFI ............................................................................................................. 86
Starting HP PC Hardware Diagnostics UEFI ....................................................................................... 87
Downloading HP PC Hardware Diagnostics UEFI to a USB flash drive .............................................. 87
Using Remote HP PC Hardware Diagnostics UEFI settings (select products only) ............................................. 88
Downloading Remote HP PC Hardware Diagnostics UEFI ................................................................. 88
Customizing Remote HP PC Hardware Diagnostics UEFI settings .................................................... 88
Appendix A Power Cord Set Requirements ........................................................................................................ 90
General Requirements ......................................................................................................................................... 90
Japanese Power Cord Requirements ................................................................................................................... 90
Country-Specific Requirements .......................................................................................................................... 91
Appendix B Statement of memory volatility ..................................................................................................... 92
Nonvolatile memory usage ................................................................................................................................. 94
Downloading the latest HP PC Hardware Diagnostics Windows version ....................... 86
(select products only) ..................................................................................................... 86
Downloading the latest HP PC Hardware Diagnostics UEFI version .............................. 87
(select products only) ..................................................................................................... 87
Downloading the latest Remote HP PC Hardware Diagnostics UEFI version ................. 88
number ............................................................................................................................ 88
vii
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