Chapter 44: Troubleshooting...................................................................................................... 101
Handling swollen Lithium-ion batteries....................................................................................................................... 101
Built-in self-test (BIST).................................................................................................................................................. 101
System board built-in self-test (M-BIST)............................................................................................................102
Display panel power rail built-in self-test (L-BIST)........................................................................................... 102
Display panel built-in self-test (LCD-BIST)......................................................................................................... 103
Outcome...................................................................................................................................................................... 103
Dell SupportAssist Pre-boot System Performance Check diagnostics.............................................................. 104
SupportAssist diagnostics....................................................................................................................................... 104
System-diagnostic lights................................................................................................................................................104
Recovering the operating system................................................................................................................................105
Backup media and recovery options........................................................................................................................... 105
Drain residual flea power (perform hard reset)....................................................................................................... 105
WiFi power cycle..............................................................................................................................................................106
Contents 7
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