Chapter 8: BIOS setup................................................................................................................118
Entering BIOS setup program....................................................................................................................................... 118
Navigation keys.................................................................................................................................................................118
One time boot menu........................................................................................................................................................ 118
System setup options......................................................................................................................................................119
Updating the BIOS...........................................................................................................................................................124
Updating the BIOS in Windows.............................................................................................................................. 124
Updating the BIOS in Linux and Ubuntu.............................................................................................................. 125
Updating the BIOS using the USB drive in Windows........................................................................................ 125
Updating the BIOS from the F12 One-Time boot menu................................................................................... 125
System and setup password......................................................................................................................................... 126
Assigning a system setup password......................................................................................................................126
Deleting or changing an existing system setup password............................................................................... 127
Clearing BIOS (System Setup) and System passwords......................................................................................... 127
Chapter 9: Troubleshooting....................................................................................................... 128
Handling swollen rechargeable Li-ion batteries........................................................................................................128
Locate the Service Tag or Express Service Code of your Dell computer ............................................ 128
Dell SupportAssist Pre-boot System Performance Check diagnostics.............................................................. 129
Running the SupportAssist Pre-Boot System Performance Check.............................................................. 129
Built-in self-test (BIST)..................................................................................................................................................129
M-BIST......................................................................................................................................................................... 129
LCD Power rail test (L-BIST)................................................................................................................................. 130
LCD Built-in Self Test (BIST)................................................................................................................................. 130
System-diagnostic lights.................................................................................................................................................131
Recovering the operating system................................................................................................................................132
Real-Time Clock (RTC Reset)...................................................................................................................................... 132
Backup media and recovery options........................................................................................................................... 133
Wi-Fi power cycle............................................................................................................................................................ 133
Drain residual flea power (perform hard reset)........................................................................................................133
Chapter 10: Getting help and contacting Dell............................................................................. 134
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