Dell Latitude 9520 2-in-1 Service Manual page 5

Updating the BIOS............................................................................................................................................................ 82
Updating the BIOS in Windows................................................................................................................................82
Updating the BIOS in Linux and Ubuntu................................................................................................................ 82
Updating the BIOS using the USB drive in Windows..........................................................................................82
Updating the BIOS from the F12 One-Time boot menu.....................................................................................83
System and setup password...........................................................................................................................................84
Assigning a system setup password....................................................................................................................... 84
Deleting or changing an existing system setup password.................................................................................84
Chapter 5: Troubleshooting.........................................................................................................86
Handling swollen rechargeable Li-ion batteries......................................................................................................... 86
Dell SupportAssist Pre-boot System Performance Check diagnostics................................................................87
Running the SupportAssist Pre-Boot System Performance Check................................................................ 87
Diagnostics..........................................................................................................................................................................87
Recovering the operating system................................................................................................................................. 89
Diagnostic error messages..............................................................................................................................................89
System error messages................................................................................................................................................... 92
Backup media and recovery options.............................................................................................................................92
Wi-Fi power cycle..............................................................................................................................................................93
Chapter 6: Getting help and contacting Dell................................................................................ 94
Contents 5