Dell Vostro 5502 Service Manual page 5

Pre-boot behavior....................................................................................................................................................... 75
Virtualization support................................................................................................................................................. 75
Performance................................................................................................................................................................. 76
System logs...................................................................................................................................................................76
Updating the BIOS in Windows .....................................................................................................................................77
Updating BIOS on systems with BitLocker enabled............................................................................................ 77
Updating the Dell BIOS in Linux and Ubuntu environments..............................................................................78
Flashing the BIOS from the F12 One-Time boot menu...................................................................................... 78
System and setup password...........................................................................................................................................83
Assigning a system setup password....................................................................................................................... 84
Deleting or changing an existing system setup password.................................................................................84
Chapter 6: Troubleshooting.........................................................................................................85
Handling swollen Lithium-ion batteries........................................................................................................................ 85
Dell SupportAssist Pre-boot System Performance Check diagnostics................................................................86
Running the SupportAssist Pre-Boot System Performance Check................................................................86
Built-in self-test (BIST)................................................................................................................................................... 86
System board built-in self-test (M-BIST)................................................................................................................... 87
Display panel power rail built-in self-test (L-BIST)................................................................................................... 87
Display panel built-in self-test (LCD-BIST)................................................................................................................ 88
Outcome.............................................................................................................................................................................. 88
System diagnostic lights..................................................................................................................................................89
Recovering the operating system................................................................................................................................. 90
Flashing the BIOS..............................................................................................................................................................90
Flashing BIOS (USB key)................................................................................................................................................ 90
Backup media and recovery options..............................................................................................................................91
WiFi power cycle................................................................................................................................................................ 91
Drain residual flea power (perform hard reset).......................................................................................................... 91
Releasing Ethernet (RJ-45) cable.................................................................................................................................92
Chapter 7: Getting help and contacting Dell................................................................................ 93
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