Maintenance and Service Guide

Failure classication ..................................................................................... 91
2. Examine the environment .......................................................................................... 93
3. Perform a visual inspection of hardware ................................................................... 94
4. Update BIOS and drivers ............................................................................................. 94
Manually updating BIOS and drivers ............................................................ 94
Remotely deploying BIOS and drivers .......................................................... 94
Analyze the issue ............................................................................................................................... 94
5. Remove or uninstall recently added hardware, software .......................................... 94
6. HP Hardware Diagnostics and Tools ........................................................................... 95
HP PC Hardware Diagnostics (UEFI) ............................................................. 95
HP Support Assistant (HPSA) ....................................................................... 97
HP BIOS Conguration Utility (BCU) ............................................................. 98
HP Image Diagnostic Tool ............................................................................. 98
HP Thermal Monitor ..................................................................................... 98
Non HP diagnostics tools ............................................................................. 98
7. Status lights, blinking light codes, troubleshooting lights, and POST error
messages ........................................................................................................................ 99
Status lights .................................................................................................. 99
Blinking light codes .................................................................................... 100
POST error messages ................................................................................. 100
Power Good (Troubleshooting) lights ........................................................ 101
Resolve the issue ............................................................................................................................. 102
8. Hard reset ................................................................................................................. 102
9. Soft reset (Default Settings) ..................................................................................... 103
10. Reseat cables and connections .............................................................................. 103
11. Test with minimum conguration .......................................................................... 104
Essential hardware conguration .............................................................. 104
Safe mode ................................................................................................... 105
12. Test with veried working conguration (hardware and/or operating system) ... 105
13. Replace the system board ...................................................................................... 105
Verify solution ................................................................................................................................. 106
Helpful Hints ...................................................................................................................................................... 106
At startup ........................................................................................................................................ 106
During operation ............................................................................................................................. 107
Consulting with HP Service ............................................................................................................. 108
Common issues and possible solutions ............................................................................................................ 108
Power-on issues .............................................................................................................................. 108
No Power ....................................................................................................................... 108
Intermittent power-on, shutdown, reboot ................................................................... 110
AC adapter issue ........................................................................................................... 111
Battery not recognized, not charging ........................................................................... 112
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