Dell P175G Owner's Manual page 6

Clearing BIOS (System Setup) and System passwords.........................................................................................136
Clearing Chassis Intrusion Alerts................................................................................................................................. 136
Chapter 11: Troubleshooting.......................................................................................................139
Handling swollen rechargeable Li-ion batteries........................................................................................................139
Locate the Service Tag or Express Service Code of your Dell computer ........................................................ 139
Dell SupportAssist Pre-boot System Performance Check diagnostics.............................................................. 140
Running the SupportAssist Pre-Boot System Performance Check.............................................................. 140
Built-in self-test (BIST)..................................................................................................................................................140
M-BIST......................................................................................................................................................................... 140
LCD Power rail test (L-BIST).................................................................................................................................. 141
LCD Built-in Self-Test (BIST)..................................................................................................................................141
System-diagnostic lights................................................................................................................................................142
Recovering the operating system................................................................................................................................143
Real-Time Clock (RTC Reset)...................................................................................................................................... 144
Backup media and recovery options........................................................................................................................... 144
Wi-Fi power cycle............................................................................................................................................................ 144
Drain residual flea power (perform hard reset)........................................................................................................144
Chapter 12: Getting help and contacting Dell............................................................................. 146
6 Contents