Palm-rest and keyboard assembly............................................................................................................................. 107
5 Troubleshooting........................................................................................................................109
Enhanced Pre-Boot System Assessment — ePSA diagnostics..................................................................................109
Running the ePSA Diagnostics
...................................................................................................................................109
Diagnostics.......................................................................................................................................................................... 110
M-BIST...........................................................................................................................................................................110
L-BIST............................................................................................................................................................................ 110
Diagnostic LED....................................................................................................................................................................110
Battery status LED..............................................................................................................................................................111
6 Getting help.............................................................................................................................. 112
Contacting Dell....................................................................................................................................................................112
4 Contents