2. Examine the environment .......................................................................................... 84
3. Perform a visual inspection of hardware ................................................................... 85
4. Update BIOS and drivers ............................................................................................. 85
Manually updating BIOS and drivers ............................................................ 85
Remotely deploying BIOS and drivers .......................................................... 85
Analyze the issue ............................................................................................................................... 85
5. Remove or uninstall recently added hardware, software .......................................... 85
6. HP Hardware Diagnostics and Tools ........................................................................... 86
HP PC Hardware Diagnostics (UEFI) ............................................................. 86
HP BIOS Conîžguration Utility (BCU) ............................................................. 88
HP Image Diagnostic Tool ............................................................................. 88
HP Thermal Monitor ..................................................................................... 88
Non HP diagnostics tools ............................................................................. 88
7. Status lights, blinking light codes, troubleshooting lights, and POST error
messages ........................................................................................................................ 89
Status lights .................................................................................................. 89
Blinking light codes ...................................................................................... 90
POST error messages ................................................................................... 90
Resolve the issue ............................................................................................................................... 91
8. Hard reset .................................................................................................................... 91
9. Soft reset (Default Settings) ....................................................................................... 92
10. Reseat cables and connections ................................................................................ 92
11. Test with minimum conîžguration ............................................................................ 93
Essential hardware conîžguration ................................................................ 93
Safe mode ..................................................................................................... 94
12. Test with veriîžed working conîžguration (hardware and/or operating system) ..... 94
13. Replace the system board ........................................................................................ 94
Verify solution ................................................................................................................................... 95
Helpful Hints ........................................................................................................................................................ 95
At startup ........................................................................................................................................... 96
During operation ............................................................................................................................... 96
Consulting with HP Service ............................................................................................................... 97
Common issues and possible solutions .............................................................................................................. 97
Power-on issues ................................................................................................................................ 97
No Power ......................................................................................................................... 97
Intermittent power-on, shutdown, reboot ..................................................................... 99
AC adapter issue ........................................................................................................... 100
Battery not recognized, not charging ........................................................................... 101
Battery discharges too fast .......................................................................................... 102
Burnt smell .................................................................................................................... 103
POST ................................................................................................................................................ 103
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