Dell Latitude 7230 Service Manual page 5

Display assembly................................................................................................................................................................ 76
Removing the display-panel assembly.................................................................................................................... 76
Installing the display-panel assembly...................................................................................................................... 77
Chapter 3: Drivers and downloads............................................................................................... 79
Chapter 4: BIOS setup.................................................................................................................80
Entering BIOS setup program........................................................................................................................................ 80
Navigation keys..................................................................................................................................................................80
One time boot menu.........................................................................................................................................................80
System setup options....................................................................................................................................................... 81
Updating the BIOS............................................................................................................................................................ 93
Updating the BIOS in Windows................................................................................................................................93
Updating the BIOS using the USB drive in Windows..........................................................................................93
Updating the BIOS from the F12 One-Time boot menu.....................................................................................94
System and setup password.......................................................................................................................................... 95
Assigning a system setup password....................................................................................................................... 95
Deleting or changing an existing system setup password.................................................................................95
Clearing CMOS settings.................................................................................................................................................. 96
Clearing BIOS (System Setup) and System passwords.......................................................................................... 96
Chapter 5: Troubleshooting......................................................................................................... 97
Handling swollen Lithium-ion batteries........................................................................................................................ 97
Dell SupportAssist Pre-boot System Performance Check diagnostics................................................................97
Running the SupportAssist Pre-Boot System Performance Check................................................................98
Built-in self-test (BIST)................................................................................................................................................... 98
M-BIST...........................................................................................................................................................................98
LCD Power rail test (L-BIST)................................................................................................................................... 99
LCD Built-in Self Test (BIST)................................................................................................................................... 99
System-diagnostic lights................................................................................................................................................. 99
Real-Time Clock (RTC Reset).......................................................................................................................................101
Recovering the operating system................................................................................................................................ 101
Backup media and recovery options........................................................................................................................... 102
WiFi power cycle..............................................................................................................................................................102
Drain residual flea power (perform hard reset)........................................................................................................102
Chapter 6: Getting help and contacting Dell...............................................................................104
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