Dell XPS 15-9570 Service Manual page 7

Downloading the network driver....................................................................................................................................85
48 System setup.............................................................................................................................................86
Boot Sequence.................................................................................................................................................................86
Navigation keys................................................................................................................................................................ 86
BIOS overview.................................................................................................................................................................. 87
Entering BIOS setup program.........................................................................................................................................87
Enabling or disabling the USB in BIOS setup program.......................................................................................... 87
Identifying the hard drive in BIOS setup program.................................................................................................. 87
Checking the system memory in BIOS setup program..........................................................................................87
System setup options......................................................................................................................................................88
49 System and setup password...................................................................................................................... 94
Assigning a system password and setup password.....................................................................................................94
Deleting or changing an existing system setup password.......................................................................................... 95
Clearing forgotten passwords........................................................................................................................................ 95
Clearing CMOS settings................................................................................................................................................. 95
Real Time Clock (RTC) battery reset............................................................................................................................ 95
Flashing BIOS (USB key)................................................................................................................................................ 95
50 Troubleshooting......................................................................................................................................... 96
Flashing the BIOS............................................................................................................................................................ 96
Reinstall Windows using a USB recovery drive............................................................................................................96
Fixing a no-boot issue caused by USB-boot support..................................................................................................96
Enhanced Pre-Boot System Assessment (ePSA) diagnostics................................................................................... 97
Running the ePSA Diagnostics.................................................................................................................................97
Diagnostics........................................................................................................................................................................97
Flea power release........................................................................................................................................................... 98
Wi-Fi power cycle............................................................................................................................................................ 99
51 Getting help and contacting Dell............................................................................................................... 100
Self-help resources.........................................................................................................................................................100
Contacting Dell............................................................................................................................................................... 100
Contents 7