Dell Latitude 3440 - Working on Your Computer; Before Working Inside Your Computer

Chapter 4: BIOS setup................................................................................................................. 77
Entering BIOS setup program.........................................................................................................................................77
Navigation keys.................................................................................................................................................................. 77
One time boot menu......................................................................................................................................................... 77
One Time Boot menu........................................................................................................................................................78
System setup options....................................................................................................................................................... 78
Updating the BIOS............................................................................................................................................................ 88
Updating the BIOS in Windows................................................................................................................................88
Updating the BIOS in Linux and Ubuntu................................................................................................................ 88
Updating the BIOS using the USB drive in Windows..........................................................................................88
Updating the BIOS from the F12 One-Time boot menu.....................................................................................89
System and setup password...........................................................................................................................................89
Assigning a system setup password....................................................................................................................... 90
Deleting or changing an existing system setup password.................................................................................90
Clearing CMOS settings................................................................................................................................................... 91
Clearing BIOS (System Setup) and System passwords........................................................................................... 91
Chapter 5: Troubleshooting.........................................................................................................92
Handling swollen Lithium-ion batteries........................................................................................................................ 92
Dell SupportAssist Pre-boot System Performance Check diagnostics................................................................92
Running the SupportAssist Pre-Boot System Performance Check................................................................93
Built-in self-test (BIST)................................................................................................................................................... 93
M-BIST...........................................................................................................................................................................93
LCD Power rail test (L-BIST)................................................................................................................................... 94
LCD Built-in Self Test (BIST)................................................................................................................................... 94
System-diagnostic lights................................................................................................................................................. 94
Recovering the operating system................................................................................................................................. 96
Real-Time Clock (RTC Reset)........................................................................................................................................96
Backup media and recovery options.............................................................................................................................96
Wi-Fi power cycle..............................................................................................................................................................97
Drain residual flea power (perform hard reset)......................................................................................................... 97
Chapter 6: Getting help and contacting Dell................................................................................ 98
Contents
5