
Manually updating BIOS and drivers ............................................................  90
Remotely deploying BIOS and drivers ..........................................................  90
Analyze the issue ............................................................................................................................... 90
5. Remove or uninstall recently added hardware, software ..........................................  90
6. HP Hardware Diagnostics and Tools ...........................................................................  91
HP PC Hardware Diagnostics (UEFI) .............................................................  91
HP Support Assistant (HPSA) .......................................................................  93
HP BIOS Conguration Utility (BCU) .............................................................  94
HP Image Diagnostic Tool ............................................................................. 94
HP Thermal Monitor .....................................................................................  94
Non HP diagnostics tools .............................................................................  94
7. Status lights, blinking light codes, troubleshooting lights, and POST error 
messages ........................................................................................................................  95
Status lights .................................................................................................. 95
Blinking light codes ......................................................................................  96
POST error messages ...................................................................................  96
Power Good (Troubleshooting) lights ..........................................................  97
Resolve the issue ............................................................................................................................... 98
8. Hard reset .................................................................................................................... 98
9. Soft reset (Default Settings) ....................................................................................... 99
10. Reseat cables and connections ................................................................................  99
11. Test with minimum conguration ..........................................................................  100
Essential hardware conguration .............................................................. 100
Safe mode ................................................................................................... 101
12. Test with veried working conguration (hardware and/or operating system) ...  101
13. Replace the system board ......................................................................................  101
Verify solution ................................................................................................................................. 102
Helpful Hints ......................................................................................................................................................  102
At startup ........................................................................................................................................  103
During operation .............................................................................................................................  103
Consulting with HP Service .............................................................................................................  104
Common issues and possible solutions ............................................................................................................  104
Power-on issues .............................................................................................................................. 104
No Power ....................................................................................................................... 104
Intermittent power-on, shutdown, reboot ................................................................... 106
AC adapter issue ...........................................................................................................  108
Battery not recognized, not charging ........................................................................... 108
Battery discharges too fast ..........................................................................................  110
Burnt smell .................................................................................................................... 111
POST ................................................................................................................................................  111
No video (with power) ................................................................................................... 111
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