Dell XPS 15 Service Manual page 7

Downloading the graphics driver................................................................................................................................... 88
Downloading the chipset driver..................................................................................................................................... 88
Downloading the USB driver.......................................................................................................................................... 89
Downloading the chipset driver..................................................................................................................................... 90
Downloading the network driver....................................................................................................................................90
Downloading the fingerprint reader driver.....................................................................................................................91
48 System setup.............................................................................................................................................93
Boot Sequence.................................................................................................................................................................93
Navigation keys................................................................................................................................................................ 93
System setup....................................................................................................................................................................94
Entering BIOS setup program........................................................................................................................................ 94
Enabling or disabling the USB in BIOS setup program.......................................................................................... 94
Identifying the hard drive in BIOS setup program..................................................................................................95
Checking the system memory in BIOS setup program......................................................................................... 95
System setup options......................................................................................................................................................95
49 System and setup password......................................................................................................................101
Assigning a system setup password............................................................................................................................. 101
Deleting or changing an existing system setup password.........................................................................................102
Clearing BIOS (System Setup) and System passwords............................................................................................ 102
Clearing CMOS settings................................................................................................................................................ 102
Real Time Clock (RTC) battery reset...........................................................................................................................102
Flashing BIOS (USB key)...............................................................................................................................................103
50 Troubleshooting........................................................................................................................................104
Flashing the BIOS...........................................................................................................................................................104
Reinstall Windows using a USB recovery drive.......................................................................................................... 104
Fixing a no-boot issue caused by USB-boot support................................................................................................ 105
Enhanced Pre-Boot System Assessment (ePSA) diagnostics................................................................................. 105
Running the ePSA Diagnostics............................................................................................................................... 106
Diagnostics......................................................................................................................................................................106
Flea power release..........................................................................................................................................................107
Wi-Fi power cycle........................................................................................................................................................... 107
51 Getting help and contacting Dell............................................................................................................... 109
Self-help resources.........................................................................................................................................................109
Contacting Dell............................................................................................................................................................... 109
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