Dell Vostro 15 3535 Owner's Manual page 6

Chapter 8: BIOS setup............................................................................................................... 138
Entering BIOS setup program.......................................................................................................................................138
Navigation keys................................................................................................................................................................ 138
One time boot menu....................................................................................................................................................... 138
System setup options..................................................................................................................................................... 139
Updating the BIOS...........................................................................................................................................................143
Updating the BIOS in Windows.............................................................................................................................. 143
Updating the BIOS using the USB drive in Windows........................................................................................ 144
Updating the BIOS in Linux and Ubuntu...............................................................................................................144
Updating the BIOS from the F12 One Time Boot menu................................................................................... 144
System and setup password......................................................................................................................................... 145
Assigning a system setup password......................................................................................................................145
Deleting or changing an existing system setup password............................................................................... 145
Clearing BIOS (System Setup) and System passwords.........................................................................................146
Chapter 9: Troubleshooting........................................................................................................147
Handling swollen Lithium-ion batteries.......................................................................................................................147
Locate the Service Tag or Express Service Code of your Dell computer ............................................ 147
Dell SupportAssist Pre-boot System Performance Check diagnostics.............................................................. 148
Running the SupportAssist Pre-Boot System Performance Check.............................................................. 148
Built-in self-test (BIST)..................................................................................................................................................148
M-BIST......................................................................................................................................................................... 148
LCD Power rail test (L-BIST)................................................................................................................................. 149
LCD Built-in Self Test (BIST)..................................................................................................................................149
System-diagnostic lights................................................................................................................................................150
Recovering the operating system................................................................................................................................ 151
Real-Time Clock (RTC Reset)...................................................................................................................................... 152
Backup media and recovery options........................................................................................................................... 152
Wi-Fi power cycle............................................................................................................................................................ 152
Drain residual flea power (perform hard reset)........................................................................................................152
Chapter 10: Getting help and contacting Dell............................................................................. 154
6 Contents