Dell XPS 16 9640 Owner's Manual page 5

Power button with fingerprint reader.......................................................................................................................... 79
Removing the power button with fingerprint reader.......................................................................................... 79
Installing the power button with fingerprint reader............................................................................................80
Palm-rest assembly........................................................................................................................................................... 81
Removing the palm-rest assembly........................................................................................................................... 81
Installing the palm-rest assembly............................................................................................................................ 82
Chapter 6: Software....................................................................................................................84
Operating system.............................................................................................................................................................. 84
Drivers and downloads..................................................................................................................................................... 84
Chapter 7: BIOS Setup................................................................................................................ 85
Entering BIOS setup program........................................................................................................................................ 85
Navigation keys..................................................................................................................................................................85
F12 One Time Boot menu................................................................................................................................................ 85
System setup options.......................................................................................................................................................86
Updating the BIOS.......................................................................................................................................................... 102
Updating the BIOS in Windows.............................................................................................................................. 102
Updating the BIOS using the USB drive in Windows........................................................................................ 102
Updating the BIOS from the F12 One Time Boot menu................................................................................... 103
System and setup password......................................................................................................................................... 103
Assigning a System Setup password.................................................................................................................... 104
Deleting or changing an existing system setup password............................................................................... 104
Clearing BIOS (System Setup) and System passwords.........................................................................................105
Chapter 8: Troubleshooting....................................................................................................... 106
Handling swollen rechargeable Li-ion batteries........................................................................................................106
Locate the Service Tag or Express Service Code of your Dell computer ........................................................ 106
Dell SupportAssist Pre-boot System Performance Check diagnostics.............................................................. 107
Running the SupportAssist Pre-Boot System Performance Check.............................................................. 107
Built-in self-test (BIST)..................................................................................................................................................107
M-BIST......................................................................................................................................................................... 107
LCD Power rail test (L-BIST)................................................................................................................................. 108
LCD Built-in Self-Test (BIST).................................................................................................................................108
System-diagnostic lights................................................................................................................................................109
Recovering the operating system................................................................................................................................109
Real-Time Clock (RTC Reset).......................................................................................................................................110
Backup media and recovery options............................................................................................................................ 110
Wi-Fi power cycle.............................................................................................................................................................110
Drain residual flea power (perform hard reset)........................................................................................................ 110
Chapter 9: Getting help and contacting Dell............................................................................... 112
Contents 5