HP Z238

Solving audio problems ..................................................................................................................... 59
Solving power supply problems ........................................................................................................ 60
Testing power supply ...................................................................................................... 60
Using HP PC Hardware Diagnostics (UEFI) ........................................................................................................... 61
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device .................................................. 61
POST error messages and diagnostic front panel LEDs and audible codes ....................................................... 62
POST numeric codes and text messages .......................................................................................... 63
Interpreting system validation diagnostic front panel LEDs and audible codes ................................................ 68
5 Conguring password security and resetting CMOS ........................................................................................ 70
Preparing to congure passwords ...................................................................................................................... 70
Resetting the password jumper .......................................................................................................................... 70
Clearing and resetting the BIOS ........................................................................................................................... 71
Appendix A Linux technical notes .................................................................................................................... 73
System RAM ......................................................................................................................................................... 73
Audio .................................................................................................................................................................... 73
Network cards ...................................................................................................................................................... 74
Hyper-Threading Technology .............................................................................................................................. 74
NVIDIA Graphics Workstations ............................................................................................................................. 74
AMD Graphics Workstations ................................................................................................................................ 75
Appendix B Conguring RAID devices ............................................................................................................... 76
RAID hard drive maximum and associated storage controller options .............................................................. 76
Supported RAID congurations ........................................................................................................................... 77
Conguring Intel SATA RAID ................................................................................................................................. 77
Conguring system BIOS ................................................................................................................... 77
Conguring RAID with the Intel utility .............................................................................................. 78
Software RAID solution ........................................................................................................................................ 78
Software RAID considerations .......................................................................................................... 78
Performance considerations ............................................................................................................. 79
Conguring software RAID ................................................................................................................ 79
Appendix C System board designators ............................................................................................................. 80
System board designators ................................................................................................................................... 80
Index ............................................................................................................................................................. 82
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