Dell P104F007 - Page 6

Clearing BIOS (System Setup) and System passwords.........................................................................................139
Chapter 5: Troubleshooting....................................................................................................... 140
Handling swollen Lithium-ion batteries.......................................................................................................................140
Dell SupportAssist Pre-boot System Performance Check diagnostics.............................................................. 140
Running the SupportAssist Pre-Boot System Performance Check............................................................... 141
Built-in self-test (BIST).................................................................................................................................................. 141
M-BIST.......................................................................................................................................................................... 141
LCD Power rail test (L-BIST)..................................................................................................................................142
LCD Built-in Self Test (BIST)..................................................................................................................................142
System-diagnostic lights................................................................................................................................................142
Recovering the operating system................................................................................................................................144
Real-Time Clock (RTC Reset)...................................................................................................................................... 144
Auto RTC reset................................................................................................................................................................ 145
Backup media and recovery options........................................................................................................................... 145
WiFi power cycle..............................................................................................................................................................145
Drain residual flea power (perform hard reset)........................................................................................................145
Chapter 6: Getting help and contacting Dell............................................................................... 147
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