Dell XPS 13 9315 XPS 13 9315 / XPS 9315 Service Manual - Page 4

Boot Sequence...39 One time boot menu...40 System setup options...40 System and setup password...56 Assigning a system setup password...56 Deleting or changing an existing system setup password 57 Clearing BIOS (System Setup) and System passwords 57 Updating the BIOS...57 Updating the BIOS in Windows...57 Updating the BIOS using the USB drive in Windows 58 Updating the BIOS in Linux and Ubuntu...58 Updating the BIOS from the F12 One-Time boot menu 58 Chapter 5: Troubleshooting...60 Handling swollen Lithium-ion batteries...60 Locate the Service Tag or Express Service Code of your Dell computer 60 System diagnostic lights...61 SupportAssist diagnostics...61 Built-in self-test (BIST)...62 System board built-in self-test (M-BIST)...62 Display panel power rail built-in self-test (L-BIST 62 Display panel built-in self-test (LCD-BIST)...63 Outcome...63 Recovering the operating system...64 WiFi power cycle...64 Drain residual flea power (perform hard reset)...64 Backup media and recovery options...65 Real Time Clock-RTC reset...65 Chapter 6: Getting help and contacting Dell 66 4 Contents