Assigning a system setup password....................................................................................................................... 79
Deleting or changing an existing system setup password.................................................................................80
Built-in self-test (BIST).................................................................................................................................................... 81
LCD Built-in Self Test (BIST)..........................................................................................................................................81
Dell SupportAssist Pre-boot System Performance Check diagnostics................................................................82
Diagnostic LED behavior..................................................................................................................................................82
Diagnostic error messages.............................................................................................................................................. 84
System error messages....................................................................................................................................................87
Recovering the operating system..................................................................................................................................87
Real-Time Clock (RTC Reset)........................................................................................................................................88
Flashing the BIOS..............................................................................................................................................................88
Backup media and recovery options.............................................................................................................................88
WiFi power cycle............................................................................................................................................................... 88
Flea power release............................................................................................................................................................ 89
Contents
5
Summary of Contents for Latitude 3120
Page 12: ...Major components of your system 1 Display assembly 12 Removing and installing components ...
Page 14: ...14 Removing and installing components ...
Page 16: ...16 Removing and installing components ...
Page 30: ...30 Removing and installing components ...
Page 32: ...32 Removing and installing components ...
Page 42: ...42 Removing and installing components ...
Page 44: ...44 Removing and installing components ...
Page 50: ...50 Removing and installing components ...